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L0 Introductian 355tTrica1 Account Part I: The alo~a of filaxed 2nd Straight Tqilefi LLCQ Part II: Intrnoding in the Jl*yed Tailed Jouse Libliography Table I :1hlu II Fed Eloo& Calls find hemowlohin of Eleved 9n} itrniiht Tailed flice Datfirflinefi Qt tervnls White Cells rnd Ee'cclobin of rieLad n“ sirnicut -’Ll”h 1100 21.18 II a -3013 01 pvrr L 3 fvr Led LvllS .Julfi II b -2018 o- “VT? 902 ”Jr "'te .afluplcaln m L" r ' "f‘ .- .,)..€:3 Uf LILgrqunqs 33d 03113 I 1211;?) 1.33413 “971011013121 I“! ~ :a .r' ‘ . )3; L 3 *Iu;r2 n; .K .x “3-- laut "i 1. 1 ‘ 0 "ti, o f “2. J .Qule If IO'ThG 1n tklrrin O :ert flQ " \I‘ .~n°rq.1(. “r1 1% Figure I Chart‘ Jhowinc =ctual thues of .4 (1) g m a? l-‘ U1) Q7 1053 91.13 no..." ......... . whim"! ‘JI. .Xuvxbweld. fin. .Jfi . L . L Figure II Ratio thrt* G Figura III Tr%"3nxa 0’ Viewed igiled U133 ?15ure IV LiTtriznbian 0? First CTneration o ' ‘ ‘\ ‘I Aczcrixuc to QFRJGS Tie 69 70 .3» w; ribmflv; sit-14351.5 :1! Ilglfldfi V... .. Introduction mutations are Lenerally considered to be any inherit- ed modifications whether lures or small. Formerly the term was used to desibnate a strikinb variation from the ordinary, like Oenothera 51583. the Eiant evening primrose which is stouter than venothera lflflfldelana, the parent tgpe. Frequ- ent mutations which were readily dietinbuished from the ancestral type, have appeared. De Vries (1) had fifty thousand plants in seven generations which descended from the mutating form, Oenothera lamarcaiana, and about eight hundred of these were mutations. These were of seven different types such as O.nannella or the dwarf, O.rubrin- ervis or the red veined, and 0.1ata with only pistillate flowers. These chanees.rere caused by a doubling of the number of chromosomes (4n), by an extra chromosome (Zn-1) or by a trinloid number (5n). Lately, the tendency has been to an 13 the word mutation to "real chantes in a Cere" (2) which may reveal themselves as either slight or strikiht modifications. Ihe Drosoehila mutations are enamelee of the latter tJPe. They are not limits; to any part of the body but occur as channes in eye color, bristle nunber, wing size and snaps and numerous other inherited variations. Cytolobical investiLations reveal no chunbe in nuhuer or arrangement of the ChIOJOSOMQS so the conclusion seems obvious that the chanées are in the chromosomes themselves. As to the nature of these ch nées, little is know . It is believed to be a minute, perhapS chemical. chants. Hutations have arisen in many different classes of plants and animals. Of the mammals, the rodent has probably - .IW v‘onw—w ‘u {‘3 been under core ‘Pfllifint oeserVItion th*n other orders . 9 a. »| V_..‘ 3 - . ..-“., ‘ . . L ‘ o '. I: . " because 0. the l.r5s nuisere ~hien may we r x 5% in e ort ° I... v 4- . vr .‘2 \. ' — . ‘1”... "u“‘j 1- ? i‘ ' ' -" \ ‘ ’1’. tlma . lthOJU &r*3-'tt 9 \ Nina”. 0!." HI: .-l;_,'.L.LuJ. ""37 73.1.3 0051-011 mutations enonC guinea ni¢3, rabbits, rvts .,4 view are those affectinc cows color, such as non-e¥outi, eruxn, dilution, non—e tension, white shottiug, an. IASjDLSJo Other changes have appeared, reducing the ggau;t or hair and lenbth of ears. lhc waltzinC mouse runs in a circle durina host or his active moments necause of some inherited defect in his inner ear. Jtill another chante from normal is the file ed tail nut tion. 11th the yulgo e of contribut- ing to the knurledfie of the nature of flexed t iled mice, thie sepsr has ream Written. Historical Account The flexed tail mutation of the mouse was found in January 1927 by Dr. 5.2. Hunt in his albino stock. In thipearance it varies from a tail which is stiffened by the fusing of a few vertebrae to a stiff tail bent into several anéles in different planes. 'Not only is the tail stiffened and bent but it may also be shorter than the normal lentth which is about the same as the lentth of the body. Drawian of various flexed tails may be found on hate , Figure III. At birth, the flexed mouse is paler and smaller in size than a normal new born mouse. fhis stronély subbested an anemic condition. There is some question as to the mode of inheritance of the flexed tail mutation. It breeds true in nearly every case. Permar and mixter (3; crossed flexed males with flex- ed females and obtained 552 offsering, 549 of which were flexed tailef and three were straight tailed. P1 crosses between flexed and streiéht t iled mice made by hunt and Permar yielded 452 straight tailed F13 and three flered tailed F13 which show that flexed is recessive to normal. But the F generation of Hunt's exuerinent does not give any 2 ordinary Tendelian ratio, for 8L1 were straiiht tailed and 163 were flexed, making a ratio of 5.04 streieht tailed to 1.03 flexed tailed. If one rair of factors is concerned, a back cross of the F1 generation Vith the recessive flexed tailed animals should Live a l to 1 ratio. aunt, he ever, found l.ib straibht tailed to 1.00 flexed tailed When he king‘- E w ' ear-“Io. 4 crossed F18 back onto flexed (564:445). It is clear, then, that flexed tail breeds practically true like a recessive char- acter out the number of factors concerned is yet to be dis- covered. The work to be reviewed in thie paper_was done between June 26, 1329 and June 16, 1950. Part I is concerned with blood findings of flexed mice and their controls at differ- ent 8588; Part II reports an attempt to fix different grades of flexure by inbreeding. The Blood of Flexed and Straight Tailed Mice 3332333: This investigation was undertaken to ascer- tain whether the apparently anemic condition of the flexed mouse at birth is real. A paler skin, especially noticeable on the tOp of the head, around the thiihs and shoulders, distinguishes the new born flexed from its normal litter mates in back crosses or in F: litters. Jice are hairless at birth so any difference in the color of the blood can readily be seen. Since anemia in benerel manifests itself by a smaller number of red blood cells per cubic millimeter than normal, or by a decrease in the percentage of the oxygen carrying pigment, hemoglooin, or by a lessened aununt of both, it was decided to make blood counts and hemoblobin tests on flexed mice and compare these with results from normal mice. In order to see whether the flexed mice recover from this anemia, their blood was compared with straight tailed mice harboring no factors for flexed tail. If the blood of flexed mice becomes equal in quality to that of normal mice, the former have recovered from their defective blood condi- tion. From these data, the rate of change in quality of the blood of these three varieties could be calculated. Previous fork by Other Tnvestigatorg: The cellular composition of blood in normal mice has been determined by several investiuetors. Simonds (4) finds 6,000,000 to 8,000,0JO red cells per cubic millimeter, Coocall (5) 6,0)Q,OJ to 10,0J0,000. Acoordinc to dimonus there are ungoilf,ll I t w , i . r .I...q.~ 5333'. IuIInIM ' “M “g“-.. a l 6000 to 11,000 rhite cells, according to murphy and Sturm (6) 10,803 to 24,030 shites, while Young (7; tives an average of 5000 per cu. mm., and Goodall lists 8000 to 10,0J0. Goodall reports that the hemoglobin content of mouse blood is 903 that of nornsl human blood. These fitures are in general consistent with the results obt ined in my investibe- tion of adult nice, the Coedell's LBJLthUln estimate is hither by 229 than my findincs in the present work. There are two types of anemia which may be compared with the kind found awsociated with flc ed tail. The first, a type from which there may be recovery, is reported by Doyle (8) in young pigs deprived of vitamins; the animals recovered at 6 weeks if they did not die before then. It was shown that the kind of ration used was not reaponsible for this anemia. The incidence of anemia, and the death rate from it were four times as treat in pigs kept inside. The hemoglobin content we. 356 less then normal in anemic pigs, but after 97 days the red cell count end henoblobin percentote of enenics and non-enemies were about the same. The second type of enenie was found by as Aberle (9) in homozygous dominant white mice. These were obtained from matings of parents both heterozybous for the dominant spotting gene, d, which yielded mice with the Lenetic fornule ES. The course of the enenie was from the 16th day of intrs-uterine life until death, which always occurred a week or ten days utter birth. She finds the cellular con- tent of the blood at birth to 06 as follows: cells Aussie 665,009 red cells, 1192 white cells per cu. mm. Hormel 4,740,02’ red cells, 5551 white cells per cu. mm. Hemoglobin Anenic 135 to 393 of human standard Herbal 605 to 106% of human standard Hormel human blood is considered to have 1005 homeglobin. Host investifiations of hen Elobin in animals are compared with this as a standard, hence, the hemoglobin percentaées given in this paper follow this custom. After presenting the data of the flexed tailed anemic condition, it will be compared With these varieties found by other investibators and the findings of investigators on human anemia. 'Eo attenpt has been made to resort various enemies artificially produced by blood lettine, parasites or injected pOiBOHS, as these seem irrelevant to the present type. Human anemia is classified with as much difficulty as that found in animals. Lazarus and Barlow (13)distin¢uish between enemies in which marked leucocytic changes are absent and those in rhich marked leucocytic changes are present. The first type would be called anemia and the second leechemia by Lea and Yinot (ll). Anemia means a re- duction in the eryten carrying constituent of the blood, hemoglobin, usually by loss of cells the some enemies, like chlorosis, may be due to insufficient kenotlobin formation. Leuchenia is a blood condition rhere the number of white blood cells is treatly increased and the proeortions of lymphocytes to granulocytes altered. If the lymphocytes are 8 increased, sometimes as high as 100,000 to 500,000 per cubic millimeter, it is lymphocytic leuchemia; the other type is mreloid leuchemia, in which the granulocgtes are present in excess. Hither kind of leuehemia may cause the blood to have a loner nercentege of hemoglobin. Anemias have been subdivided into primary and secondary enemies U2). She former are apparently not caused by some other disease, but exist as a distinct clinical disease such as pernicious anemia or chlorosis. secondary enemies follow such conditions as hemorrhaces,_parasitic infections, chemical poisoning, alnutrition, malaria or tumors. lhis classification does not indicate the chief pathological characteristic of the blood and blood forming organs. 30 Lee and Hinot (LU and Evans (LN distinguish anenias with de— fective blood formation, e.5., aplastic anemia, and those with increased blood destruction, like pernicious anenia, and increased blood loss, either acute or chronic, e.g. anemia from gastric and duodenal ulcers. Another useful grouping is that made by use of the color index 03). The index is obtained by dividing the percent that the hemoglobin 0’ an animal is of the normal percentate for that animal by the percent the blood cells are of the normal amount. If a woman has 355 of the normal hemoglobin content and 030,000 red cells or lac of the normal numoer of 4,500,000, her color index is 25 divided by 13 or 1.9. This was actually true in a case of pernicious anesia of precnancy (lm. If the color index were less than one it miéht be a else of chlorosis, an anemia in juuflb girls who -ave deficient henotlooin. This classification, using the color index, is the one thich will be used in considerinb the anemia to be described. Proceedure: For countinb the blood I used a dill cer- tified pipette when white and red cells were counted toLether and a Trenner pipette shen white cells only were counted. A 1} salt solution tinged with a small quantity of Gentian Violet is satisfactory for countiné both types of cells to- gather, while use of a 1;; acetic acid solution tinged with Gentian Violet is better for only White cell counts, as the red cells are dissolved by the acid and the white cells are colored nurple. The blood is diluted 200 times by the selt solution or only 20 times by the acid solution. The first counts were made With a Levy-Kauser sinLle counting chanber. Two drops of diluted blood from the animal were observed andf the everate of the two constituted the count for that in- l dividual. Tost of the counts cane from a Levy-denser double counting chamber: both drone could then be observeu at one i fillinb of the chamber. nemoLlooin was detersined b, use of; a Sallquist color scale. fhis is accurate eithin 0p. If a dr0p of blood was darkcr than 40s but lighter than 50s it was recorded as 455. The source of blood nae not the same in all cases. At birth the blood was taken from the severed neck of decapitated animals, hence, no counts at later dates were ever nude on animals counted at birth. Sometimes the count at one week was from the neck, ore often from blood obtained b5 cutting the femoral vein. From two weeks onward, I usually obtained g I i I 10 the blood from the tip of the teil, cutting off several millimeters each time a count was made. Occasionally the blood came from the leg vein if the toil would not bleed. The flexed and normals were treated the same at one week and tieresftcr; if the count was nude Tith blood from the lee vein of one, it was teken from the suns ,luce on the 1 other. If lynph 733 mixed with the olood t Ken at birth, it obviously diluted that from both flored and struibht nice to the some entent. It does not seem, however, that this dilution made any appreciable difference for the chanbe in quality of blood from birth to one week is not appreciably greater than the chinbe durine later weeks when the blood was drawn by e method vhich greatly decreased the chance of dilution by lynch. The number of red blood cells in the flexed mice increased 545 the first veek end 325 the second week. A sliLht decrease is expected as e mouse grows further toward maturity because they are nearing the maximum number which is present at maturity. If the incresse continued at the sane rate from week to week as durinc the Pfirst Week a mouse r*uld have a hundred million blooi cells in a few months. 3 avoid this the rate decreases renidly. As already stated, the countinL use done at weexly and fortnibhtl? intervals, biblfiulfié at birth. 'herever possible, the same mouse was used throughout the uhole series of counts. After four weeks the intervals became tso weeks until the mouse was twelve weeks old, when countinb was discontinued. Thet is, flared mice end their controls were counted at birth, at one, two, three nd four veers after birth, and further fit six, eight, ten and twelve weeks. The adults 11 counted are mainly the parents of those used from birth to twelve weeks. Four of the flexed exalts (male§18 ahl females £14, £17, f 8) were not parents of the mice used in the blood problem, but of those recorded in the inbreeding OXperiment. These eiults veried, in ”be, from six months of age to nearly two yeere. To determine whether flexed mice differ from others, normal controls vere used. Chess were 0? two kinds. One was the heterczy cue strai ht mouse. Fleyel x strai.ht . L L C. mice yield stroibht teiled mice which carry flexed. These Fls were beck-crossed on flexed, givihb both flexed and straight offspring. $0 the straitit 0ff3prlfi¢ in the heck- cross litter; are satisfactory controls for flexed mice. Usually the count of a flexed was pelred with the count for a normal litter date at all ages, so that effects of feeding, temperature, or health of the mother might be the some on both controls and flexed. Reciprocal crosses were made to get these litters. Seven hetcrOZJbous straight tailed males(ffl were meted with 14 flexed females; their onSpring are re- corded cs crosses 8a, 8b, 93, etc., to 14b. Qne flexed male 1 six heterozyhcus straight fancies gave the results recorded in crosses 36 e-g. C“ t The other ty.e of c ntrol is ’he iormfil mouse carrying (3') no flexed factor. Cne homozygous treicht male was meted to eight strsight fecales in crosses 44 s-h. Their offspring lived under the same conditions as the flexed and heterozy- gous straibht younc, hence any differehcos may be attributed to the abscehcc of the flexed factor or rectors. nearly all colors of mice were used: albihos, pink aged clock and 12 brown aflcutis. dilute brow 3 "hi dilute hleczs. iota: Cables I end II on fiuée 46 Live all of the blood oetertihttiOhs ends. Thule I shows the indivir heooilOCin detnrnihutiohs an; the red cell counts with the cross {Erwuz“hich the; grass. Lucie II Cormndxhs be idea elite cell counts. 3 list of houoglouiu gerceht=ce3 hude at the sues iihu oi the (hits cell counts hhd not listed in Sable I. Avorztes ch; prooible errors are “at civeh under each calugn out in o shociul table, lie; 80 one he; have all the cvcreLes from all the érouos easily at hand when cosysrine Eco series of graphs from thee date show the conteht and the chcnbes in the olood at different aces. Fiéure I on pabe 67 contains graphs of white cells, LQQOLiOuin and red cells for each v riety of mouse plotted accoroinc to avereeee at different ages. But only ectunl values can be read from this figure. Ihe relative rctes of chcnee are best shown in Figure II on page 69 which shows the plotted loberithms o? the actual values. "If relative rather than absolute variations are of chief concern, the chert embloyed should be of the semilogsrithmic typo, sceled logarithuicclly on the v-axis find Writhmeficfilly-On are ’c‘roue tel 53 nfi~“1 "ort‘c¢l diets cos. '* om used to 111.9 f; I. ‘ : .'lf-‘ ’g 1" .Q: 4 I( .--f-. €' i (a. J 77 n I 3' .,,V§\ ‘; ‘ h n 7. ‘. l l “ , :_1 ‘\ ' n . 3 o q V - ‘ ‘ I ' ' h " J - 4 " - «‘ U '- ‘I L ' .4 ‘ I. 5 § ‘ ;_ J -l "a '. t ’ .3 '._/" _‘_ .. 'J " J S ' r I‘ ."‘ - Q A . ', .o ' . . . . ‘ ‘ ' . .10 3 1" V' V" ‘ b? i na‘ 1 ’3 ‘5;_;; l .1_,f. 2.3303. ' ”111,3. ' "I Q‘ r." . ‘. ‘— '. I _ 1 ‘ “ : ‘ v- - . .. L ‘. -‘ ' - ' 1:: 4L thS;e:.::l 0:; tr 8 (1a)). l1: {health .:.o lo 7:r:.t .ALC xiell'a' 13 charts, we ere able to juice comgirfitive rates of chance: by the absolute ch”rt the actual differences we; be told. Comparison bet een the graphs made by the two methoés shows scant difference in comparative results, to be sure, yet one may be used as a check on the other. Discussion 3: £333: The flexed ere ehesic at birth. This is shown by the difference betneen their averages for red cells and hemoelooin, and the corresponding averages for the heterozygous and homongous straibhts. Compare first the difference between the red cell counts for the flexed and heterozygous straitht mice at birth.- Ihis difference is 1,560,033 red cells per cubic millimeter (4,880.0?0 - 3,32..OOO) with a probable error of 151,630. This fiifferehce is 10.29 times its probable error so there is a significant fiifferehce between the red cell nuebers of the two type: of mice at birth. the 03d: fire over 69 billion to 1 that this difference is due to chance. The flexed are wnehic as conpsrei with the normal heterozy- gous straitht else. its ease is founfl to he true when the flexed *re ccmaered tith the hemougccus straights. She difference between them is 6&0303 * 132303. Lhis differehee is 4.5 the site of its :roou.le error, so is but as sicLi i- ceut, statistic.l.5,fls the :irst ciifurence 113. here the 05d, are ale to l stainst bgG sizingvdce DElLC his to clones. Ike erifloacw free hneoglouin soua’rifion' is even “or _ . -. - ' - ‘ -‘ 1 . " r ' ~ r'. v I ~cnvincing. .0” ”air 31 CayugLUUln gsr:en? L- 1hr 1 e . . - a - o ‘ . I ‘ g’ f ., .v‘ . ,‘ I ' " - 4"- 'r ‘ -- ’ ketiwet C,h‘ “tr lyfitfi it 2.rt . ml”»‘ 2e ' e nt be 13? ‘ ‘ 4". 9: .i x r; ~ ' —- — - the ’;*.e. u in 1: is .l.; 5 .vte. - 1: .iff#'- 3a is 14 22 times its rob ml? error or odds of over 69 billion to 1. Hence the low concentration of henoblooin in the flexed rouse causes its emetic. inis fact is equally well demonstrated by differencinb the homozygous straight and flexed mice at birth. the h6£0¢1001n of the forner exceeds the latter by 17.5} t .97 or 18 tides the probwole error. Anemia at birth, then, is ploinly obserVed. The eremie in "domin nt white" mice is decidedly more pronounced (14). They show only 663,009 red cells per cubic millimeter at birth as ccmnered With the 3,;23,030 ’ of flexed mice one 4,710,000 for normal mice resorted by f De Aberle or 4,880,030 as fOTnd in the ereeent investitfition. nor do the *lexed mice dis necessarily from their aild sneaio, for weny here lived beyond 13 weeks even tho fustein- int five or six losses of Llood when it was counted. When this anemia is classified accordinw to the color index, it is found to be one of those vith a color index less than 1. If We use the svorncos of the heterozytous stroibht at oirth as the normal condition for a mouse at birth, we find thet the flexed mouse has 64b of normal percent hemotlsbin for mice (59.4 flexed percentage at birth / 63.7 heterozyhous stroibht gercent to at birth) and dog of the : rn'l hum er 0" red coils (o,-L0,030/d,on0,000). The color lLVOX i: hot.,13win in s o? noemfil/. rn‘ cells ere o” ro‘m“1 or 64/08 = .84. Chis ” at e In: it as fiiegic i simiiar to chloroo 15 The white cell content of the flexed sninols' blood is not one of the ceases for the ens ic appenrnnce. In the flexed, they are neither so numerous as to constitute leukemia nor fire they less than 1he number in nermsl mice. At birth, thn flexed have a "hits cell count of 4,297 her cubic millimeter, the heterozygous str iLhts hsve 4,129. The lifferehce of 168 t 512 is not significant since the probable error exceeds the difference. hetween the flexed and the homo.yLous straight whose average is c.39o is a difference of 304 t 505. Absin, no siLnificont difference. Ihus only red cell and hemotlobin deficiency are responsiule for anemia in the flexed tuiled house. The fact must be taken into account that I have lumped tobether lymphocytes, monocytes and erLuIchtes in maxing white cell determinations. ghere any hove been worked chambes in the number of one type of vhite cell, oomeansated b' changes in the opwosite direction for other Lyons of White cells, without my detecting it. Recoverg: At the eni of the first week, the flexed mice have practicslly recovered from their anemia, so for as the red @9119 are concerned, but the hemoglobin 115s behind, to catch u. with normal mice at the weeks. The red cell average for the heterozygous etraithts at 1 week is 5,510,030, for the flexed it is d,125:030, and the \if cr- ence in $90,003 * 105,0J0. 2413 differnnce is 2.9 times the size of its prooibls error so it is questionuoly sioniricutt since the and} are only 16 to l. ihere is a Jere difference Iran-.1. a “i; will!lll,-.l..l.l| ,- of 20.000 between the flexed uLd homozytoue straights whlcl eutbeeta herlly any distinction at all. Ihe difference between the hemctlooin *Vlrlgnl at one week 13 etill prODOuuo- ed. The heterozygous etreitht evened the flexed by 8.89 t .90 and the homOSTy-LO‘J? eyceed the 71839.3 b 4.6:; ‘ .94 . The first 13 9.7, and t%e eecond 4.8 the size 0“ the probfible error. :he Odds are over 750 million to 1 in the ’1ret 0196 end 8L8 to 1 in 'he eeoonl eeie. 5t two weeks the flexed are equal to thelr_normel controls as me; be seen b’ con- trustlnL the ‘voretee: flexed 55.85 t .58 ; leteroa;coue atreibht 55.6; t .73 ; homOZJCOHS etraiahte see i .57 . The differences botwoen the evnraboe do hOt exceed 2.7 times their robaole errors in any case. eneeia is over. Lor doee elemie return to the adult flexed mouse. There is no way of differentiatinb a flerel adult from o heterozygous straight one by his blood cell count. lhe flayed equal the heterozycoua etrnichts ane surpass the homozygoue straights in red cells: they ear a a both in henotlobin, tho not eibnificontly. (Ihe solor index for £10 ed asulte is 1.04.) this is plain frog differencint the averages for red cell counts. The flexed adults have 11, 200,090 red cells per cubic millineter, the heterozdtoue atreiéht adults 11,050,000 cells. ghe difference 13 150.000 t 510.000. here the orobwble error eyceede +Fe difference so ihe ev=retee ere cert-inly not diflg_.uc. Between the averagea for flayed adults and h mozgcous etrniiht adults there is a difference of 1,513,000 t 17 244,000 red oloou cells per cubic millimeter. :his difference exenede its grobuole errcr by 6.4 tines. :he once eceinst the difference being due to chxhce ere .ver 19,c00 to 1. Hence the flexed adults surpass the homozyhcue streibht' adults significantly. Between the avereees for adult hemotlobin percentages. there are no sitnificent differences. :he flexed edults' average minus that of the heterozybous straight edhlts (68.74 - 645) is 4.7; t 1.83 . 2 lie di”ference is 2.5 times it- :robehle error. Since the odds are Orly 9.9 to 1, I the averages are not significantly different. who flexed 1 adults' average minus the h mozybeue etrnifihts‘ adult average (68.75 - 65.85) is 2.93 t 1.e5 ; the difference is only 1.6 times its probable error. The odds ere only 2.5 to 1 hence the everebes are not sicnificent. It is- clear then, 1hat flexed mice are not anemic Then they be- ccme adults. The recovery .ermllele that in younL gigs ooserved 0; Doyle ( 8) tho, es tuuld ow eabected, eice rectver nore swiftly. the olood of each variety of mice is on the same' level by 14 days, pics by 96 days if they reaover at all. Congerison 23 blood at Uifferent_§hgg: After two weeks from birth there is no consgiouous difference in red cell counts between flexed end heterozyeous straight mice. Ho difference is more than 3.5 tines the nagnitude of its probable error. This is evident from Picure l 4%57Where 18 the vertical uistance between the curves for the two variet- ies is never as are t afte~ two weeks as at birth. She adults differ by only 150,0J0 * 510,040. Since the pro- bable error a needs the oifference it leg be considered that when flexed mice are mature their red blood cell content is approximately the same no that of their highest control. It is noticeable that the flexed curve is con- sisteatly but not sigrificantly hibhcr than that of the heterozygous normals after the second week. There is some iniiOGtion that the homozygous striiaht mice have a significantly lower red ilood count than the {lex- ed, beginninb at three weeks fr=m birth. Below are the differences, probsbls errors and number of tine: the differences enceeded their prob. errors(all in favor of the flexed) at afie: beyond two weeks: Differences between flexed and homosytous streichts Difference Frobable error Odds 3 Weeks 1,570,000 1 350,000 5.48 About 1050 to 1 4 Geeks 1,100.0J0 3 159,000 6.90 About 427,0JJ to 1 6 iecks 640,000 t 204,0JO 5.10 About 26.3 to 1 Adults 1,510,000 8 244,030 6.40 About 19,500 to 1 The graphs show t.st the lowest curve belonbs to the strfiibhts which do not carry flexed. The two kinds of straights show a considerable difference only at birth of 873,000 2 159.0)0. :he difference is 5.4 times its pro- '/ b"ble error eni the cede are about 1350 to l atoinst the difference being due to chance. The lack of sufficient data 19 for the homozyLoufi strvithte at e, e, 19, end 13 weeks limits the coeeibilitiee for dr Wing reliable conclusions, but the evifiehce eeéme to inFiCEte clewrlg hot once the fln 9‘ animals hvvn rccovwrel fron their eneaie their red cell count in hither than for homoz {one etruiiht nhinuls, the heterozytoue etrqibhti beinh interne iete. The white cell condition throughout 11f“ is similar. The hich ,robeble errors of the averages make fairly large intervals between averages inconsequential. The largest gap is from the homozyboue straibht mice at six weeks of age to the heterozyboue etraibht mice of the same age; it is 3500 but the evarebe for the forner wee deternined by only four counts, hence the cup nay not have been nearly so large as it vould have been ‘ad many more counts been taken. In general one cannot mistintuieh those nice of the same age by their white cell count. Likewise, after one week from birth the tyges of mice investigated could not be fiietintuiehed from each other by 5 their hemoelobin percentage. There is no significant diff- erence between the vaults of flexed and either type of 2 straight tailed mice. 99 an eteninetion of the table of differences on page 63 will whow. The same is true of q differences between the two types of straight tciled mice. None of the hemotlobin differetces between the t rec ty es of mice were as tract when the mTce were com,nred after a Week old fie they vere "hen compared at birth. 30 it may be concluded that the hemoglooin percentieee of flexed and atruitht mice ;o not differ significantly after a ween from birth. £0 ncreuwe tron ;irth: An insiection of the 10¢ 3_ charts (51¢. 2) will convince one th.t there is e Marked ohanbe in Lhé red cell .verlcee within 3 variety us the “ice become older. donaiderod matheuetlcdlly, the flexed in- crease 54s in the First week, 32) in the sec nd, 19y in the third seek and 26} durinb the fourth week of life. An increase of only 85 is gained netween an age of one month and maturity. the climax is at four weeks, from then on change is slight. The graph indicates the same reeid pro- gress for the straight mice with the e ce tion of the homozygous straights between two end three eeehs. An exelenetion for this exception is lackinfi. The following table shows the rate of increase in red blood cells in percent by weeks of the three kinds of mice. Flexed Hetz. St. 20302. at. let task 54» 12.93 £7.1e 2nd leek ‘ 32» 29.55 29.4g 3rd Rack 19» 10.99 3.3» 4th Week 26p 25.1g 56.et 4th'ueek - - to adult ' 8e 16.1g 5.35 note that each kind increases more rapidly dkfinb the iourth week then durinb the third week. Perhaps this is the result of the chente in diet for durine the first three weeks the young are with the mother but she was removed when the younb were three weeks old so they had to live on grein instefld of milk after she wee tdken from them. Hemoglobin behaves eifferontly. rho flexed Show a re id rise while the straitht mice decline at first then rise eloriy. xhe rate of increuee* in the :lexed LlOUd pibment is as follows: lst week, 24} over birth; and week, so over lat meek; 3rd week, at over ind week; 4th week, a decrease of .93 over 3rd reek. the adults inc? an increase of 183 over the he=oLlotin percentage of nice 4 weeks old. But the heterozygous straitht rice decrease et the rate of 4.7? the first week end 3.83 the eeeond ultho the differ- evce between the tetuel counte ie not statistic 11y Sltfilfl- cant. Chen .hc curve eturte ucreri. hetween the 60.73 hnnoglotin at birth uni the 64 at naturity there 13 w :iffer~ ence of 3.35 t 1.5 which ie herily signiffcert. 50 the heterozytoue mice neither improve nor decline in hemoglooin sibnificzntly. -his is evidently true for the homozgcoue mice also, he an inerectiOU of the lob overt chore. Ihe only statement tho seems obvious from the v its cell curves is that teere is an increase lfl'LULUef betteen 2‘ birth and maturity but LO scholar rwte of CmWLtQ. lhe flayed at maturity and at birth differ in celle er cubic milliheter by 5,705 3 858, (difference 6.6 times its prob ble error) a Slcnlf.cfiflt difference. Iherc is an increase of I"The percentages Liven in ihie yar.£r2ph ere not the absolute inc eecee prom week to week but the qQFOth thot each week 13 over th*t of the nreceedinc week, e.¢. 24; is the difference between the henoalohin fiveritee f.r Tie ed mien at birth fin? 0t on!1 rock divided by the i‘.'i'-'a*~-‘e.1 V1» 9 at birth 49-39.:/b9.4 . ihie shows the rate of ingreise from reek to N) (‘3 1525 over the number 9t birth. 2119 heterozygous mice increasa by 3a?l * 133% cells (diffnrnusa, 5.4 t1 as its probuulfl error) Ru incrngse of -81J:. firi thz heme ytuus t *4 strnibht mice aiffnr n; 7?37 t 7“: from flirt! to 33m JLQS, a Lfiix 0* 1;:;. harem, there 1% “a 1m voraant shown in white ceLl vn‘ r03 c¢11 UCLTtS in even Rim! :3 mice but the fie ed “lonw TKQ“ n :haé lggrcvem“rt if *dn;{10~in per- cantata. 3r. punt auhgnsts that: come» at La uglc.13 ,vrceutnge with increasinc number of argLLroc;tcs in 117 ,vflnc Straitht vi 1 t‘iéed f 1-17113;_L§ 113110 I has that the strvithas fire Lbrh 11th ‘erythrwcdte; ricLer in hsdutiuuiu Luau inn ..ng;, 9n the other h«na, the incranse in he¢c¢lo»in g3P09pLfl e in the C. 44.0..eu -~.L.iJ;'-.L3 g.'r:.1‘::lieliu; Lha inure-1.30 in a:;;b-_ruc;tes SULLQStS that tha :19 a3 are umrn yith erginrougtas h Vint the stalk emuuvzeat of henn¢10bin. -ha LianeJ gt birth Fvva 52.4% heaoglozin an; 3,ub0,030 rem cal :. ;»g1t flexed gica hvve 6b.?é henqtlouin and 11,270,333 red cell? or 7&5 (56.7;/ 39.45 - 1) increase in hqmctlohin and LS7‘ itcrn Se in raj neli? OVfir birth. That 13, whilh thn haxcblobin in ?%H“aa once 1&9 rad onlla increfiéq 3.2 times (74:L37::123.h). Tkn hatarozyceua‘ straights rt birth hive 59.73 hemoglouin fififi 4,»w0,033 re' cvll: These fiture» incrqnma to 6:3 aha 11,050,337 it via t wtes. ‘ . ‘ a ‘ ' . " . fi‘ ' . ' \ "1 A . N I I. I. -’ x « x- ;nn b«mutlouxn n1J*s «n 1n1”91fi0 of 5.u; (oéJ/D).7o - 1) Fnfi a 4' .1 s 't . 1' I; -\ "1 r‘\ l, ' '. I - ,- the red 39;Js 'h 1L-r3143 .L 403 over U [—1. ’1 (-15 -3 ; in other 'eré, o I ‘ _. . Q ._ _ fl ‘ “ " y‘,‘ -_ *' tpl 1 . = .2 q I ’4 whlle Lna heJcQLV in in "93135 ,uce th? :94 3‘;;5 LL3;Q&39 Nu (-0- imea. ;hq humozgt-ha straight 3103 hwve 33.L; fi940¢10 in a: birth qnd 4,010,343 r31 afilla gar gggie "Elli“?tnr. :Pnn aggitg ‘ '\ the; h¢VJ $5.6. homoblouin 4Lu u,0u0.3¢4 ran a iis. {his is an 111.31'3'2.;.;G of 1;). in 'Ii53gipi.1;}uil. n; 1411.: in 951 09.111. .2510 rupio of 1113.0 me- a. L": .oLl 'uiu La 6411...; is l to 2.4 . A Ihe £10393 sag « CQLLU of only i .o ".L; tLuJ LUVO incseus- ea their uxuunt of hanuclabin “01:13 as gnsL as Lueir cell iuiber. ihe strnibht dice, however, hwve inexoraad their cell mulber much aura r3 idly tkzu Lhair Le .hioqin percent- 850. At birth in each kind of mouae the ratio of hauoLIOWin to red 09119 may b9 taken as 1 to l. The fln'ed as adults have not dnpnrtad aq far *ron this ratio as hove the strzithta, for tboy than i“Hm n 1 to 1.93 ratio (174., the percentoée of hnmoblobin at aault ”gas as compared vith 1J0. at birth, to 3575, the voraan? of red 3 lie RS coaoflred WiLh 130} at birth), whila the haterozygoua straight sica hovn ' 1 to 2.14 ratio fin‘ the hemozggous straiéhta 9 1 to 3.39 ratio. It is evident that tho. increase in hrmoglodn ‘mrcnuts‘lba parallals the incraase in number of red cells aura closely in tho Flexed mice than in the straight aicn, hence the flex- ed mice are born with a cloanr apsroyination to the adult endovmeut of hanoblouin ann ura the straights. fine auuita of bath flexed and strnibht 4109 have less hemoglobin per 0811 than do mice at birth. since the cello increase “ore ruyid- 1y thvn fioes tho h HOLthino The preeeedinc observations are necssa rily Haralleled by data from indivi'uol nice: one 9193519 fruo each ty~e will suffice to illuotrita this: f1 Flared from orosa ?2 Hetz. 3t. from cros ,2 Homo. it. From cross 2 §3* Flavod froo 02W0 9 :2 Eotz. it. from arose ’3 -1 _ 32 Iiomo. at. from orosa 3 33 Flared g2 Eetz. 3t. 32 Homo. 3t. 4 54" Elexad 232 131:. #2 homo. it. 4-7 Flex-3d )‘t o f) I 1-81.12. now 0. .31.. 8 £5 Flaked f2 EntZo 3t. 52 Homo. 3t. 10 55 Plaxed 2 Hafiz. at. \I. tw HOMO 0 3t 0 stit to d for £1 who * .u‘u . ”511% Stitt tnfl for 5 who d "in bsti utod for 14 who 5 Those subatitatad e*e fr ones whoao 5140“ 56! 36f .4. 51 books {I z) A (.13 (v3 the. Wifirt Weeks Seeks Seeks H Weeks ed aftnr ed after 93 after '. at:- U] 'uu. Q? Q o; \J 0 in t: L LT- :33 {)1 u C.“ C- Foo ‘. (’. . -, I", I! [1‘ DUI-J .55.) (3.); 6\),0 (3),. 63:1) ()7 ) \JJ 1’ - 5,853,0JO - :3, 942;), DUI) - 6,370,000 — 7,?50,0DO - 6,710,030 - 7.519.000 - “19,000 - 6,33'3, 0J0 - 10,200,0J0 - U,LUJ,0JJ - v,lC0,0UO - ll, J40, OJJ - 3 :UQJ. JUJ - 9,060,030 - 10,173,000 - 1),640,0JU - 9.4JJ,OJO - 1),,O2J - 10, :0: 0)) tPo lat week. the érF rook. the 4th rang. o crows 29 the The irroévl title? in tho Lr93: ha (‘3 01 wouli firobnbly be smoothed out if tion had yoruittel 1h} counting o” lfireer numbers in each CQPG. fi0$ever, of any component of to? blood magbo numbers given. the ;1scussion : ”hot 13 positive answer can be Divan. loss of bloofi b" flurPOBqul cuttinb when ckbnts £49 have any blood alots 2 Afld if 109 Vt continue to maintain anenia n3 bIOOJ “£09k. A possible canoe 18 tho blood forming orgwna ourint latq uterine life. We Abnrle founfi circular einus ‘ni nuvruun13n¢ after lisfin‘illn‘ltlono tho 15th 5%3 of f2t41 life, but as proguzinL ergtlrchtos H for saga in the blool forming orbzns 3;. ulCOq (yells 'Hmi nogguwlofir: in n i I‘ ‘ ‘ ,. ' . ,- ; ,. ' .- ' , I ‘A _. _‘ 5.. «ll‘d i J L91 .l‘-.'~.L Lruki $ut1U11 I“ U): ‘ (1 LL, str lcflt -c2 ggoxn to carry .loaed . .‘ _. ‘1 v‘ (V ‘ . .’. ... ‘. N m J ‘ cthe (u; L0n33! C2A1u2, UwUH .14 e4 L . AV 9 .- ,-- ~ 3 . - , VIUJ. .5. . ’ 3x LIL-[J 1L! ‘1 Ju ‘L, h 'uS I baliave bf 1h? 84 points plotted all 6:91:38 0; Qartuinig is la not duo ;o shown at Llrth on 2 of blood had nouvod anemia at tirth, fiflflv The bone marrow Z~‘- U. 3.0 3 L fir? nfter Ditto. betfllhb in,uir3 Lhe 1.9 ~ulu aha annorfil trend irly wall seam by the out o wora made from averages taken from 15 or nor: counts. tho muon'a? no 30 hemorrhiee, noaldonJAI cuminc or the us. only rarely 1h? flexed mice. 1t 991101.113 13 taken week after factor inhibits ant alrly extra— blcofl cell: in Lho 1I o - y .1- . . ‘ f. u .us'nac'5‘no it 1J1” Slth ‘zqg begins to function at rroln ourmen 0f .gomo hare iéfkpdlaUtiOu out ‘ L O . - v 9 .'V - » , .- L11 1 ' l *3 J-‘2{3 ts; 5U U;_' K! J? .. ' . 1‘31“ 1. 4'." 1‘ 3 1‘5 €5.30 I; 1.1.28 1. 2135. e' " L q 1 f ‘9’) .4010 “13.). U"? "i h. 0‘. hence, the sugposed bane for an 113 13 race asiva. :erh3,s the bvine 13 hot Lha s as 33 ch 9 flsxod can} but lin} zed with it very closely. 3f 415 offiriub frun flamed o“ flexed crosses, I found thrae :hich 30:3 3 EarauLly struibht tailed and 3n9313.1 kt Bl days old thay proved to be actual-3>< 1y without stiffrm e33 in the tail or Flo"urn of 32y sort. Here 13 anvuia Without‘aoaatie flovei tail. further, fiunt fgund 2 mice in his cross J“fi whish ware flnxed tailed but normally red at birth. “ne shamed 553 he¢cfilo in and )< “93.030 red calls, tho othér 65$ hmgoulobin Tu} 5,103,300 red calls, both bniné F?! "ran tho bleaei uvurnéwa Ht.hirth of 33.43 hemoélobin qné 3,; an) 3)) eryt?rcc;tas. inch c3393 sugenet thfit Fleved 1311 uni enath Light be 33 to 310:913 linked c9133 rhicn cronsovqrs'sunetimaw :3 arute. It r3- mfiin: to be seen wiet 9r fqued tail anj 330313 are 1L9 to t'r‘h?) 2:":‘13. €3.16, 0? to 010331;, li.’::-.~'3d (43133.3. 0 Lo investigation was 3339 to .133uver b or Ker there 18 any correlation hatree: 39,103 of ileyure 231 S3verit; of the 330313. All grade} of ilexure 3er9 3383 in outuiniuo recoras anfi nu strikino corrvlutionu warn uutlufld. 1hia at be u grofitabl n t0p10 for r933 arch. #13r1: A. Ikn.flered t 113d gauge is wnoaic flu mirth. 1;. This {uriaba whally'iflxyagpwwrs 15'1xx;:W> k: of age. p. Ilarn 13 3 r? in lflQF? an in r93 ,103. 33113 anfi hqncéloiin purcnrt'tq in 1%? 9 330% 30 an fiarin. Lb] first V“ ‘ I. g. ' A‘s ‘ o '.. “ E“ 4" vi. 1- " f‘. :1. . ‘ , fuur 30013 3’33 awrun. grad tnnn an tn Vidit 1139 {Ha increase is slight . the straicht t&ile4 mice :how im- provement in the r91 cell count alone. D. ;n increase in manner of vhibe calls is cartflin in each variety, but the rate of chanta follows no Such regular courte 98 for the erythrocytes. _ v '.-—.n- ug.’ Pfi?? II Inbreadint in Lho Slowed 2.119d gouge .\‘ v _ o ‘ ‘ n ‘ o ‘ '- A‘ _ uc-O‘e: 9 'laxel L 11 : ~LthJJaSUlJ J§.ie. (ru.ul . “mi-1* " ‘ - r . : a- :“ o ‘ . .L‘. c.$.é.k. It‘ll-1t OJ?1L.LIA 1J'JK.‘ ‘Lf;‘ 1.19 4 ‘L 'fi_§\}__ ‘r5‘ ll»-qr3;1t ‘ H ,\ ‘3 f. -- ~. . v ' ‘ : __. u "I o ‘ ‘ ~. . ' -, ‘ , '1 O ,. ‘o Cr: M}; o. :13;.J;q g-a oxoLnL .Llflll.+£ tr udfifi ka,‘2 31'. LLn tho ouryose of fixinc if Possible Loose 41:33“O;CQ‘. If inbreeginc aoul‘ est oziso oifi {out trua urayoinu t;pos, than tho-s ould Em BV’idOuGO of I:uIfi°l"OUS formats whim 1;.‘0ui.fj tho extant find tyge o? floxure. Tho work of inbreeding horn rejorteJ cavorfi three gwnorutions. Lhe gain 13 first salacted unoor gr. Hunt's sapwrvision for tho {ricinal matinca are 8“1183 the first Lonerfition, {hair o¥fopring ccrvtituta the "aroma goLnrfition, “n: sutinis from soloctad second Loner“t10n nice hfive yielded a trird tonqraticn. A few thirfi gonerati;n mice have been selected n3 vqrents, out hai nroflocnd no 0?“? “iflé at the iota of Tritint, July 19, 1933. The inbreediLé fork 333563093 aux? 25,1229. Drooeoduro: Soven tyga: of mice were noiooted high di“forefi sufficfantlg from each othqr to be cou=idered seyarutq 0‘: ‘1 .J 1’; (1} O A G 9-“ JJ \1 j I .‘ ‘ (“I '1 C? c-‘ I f— n H L 'J u. *1 "J 3 y. 0 d H a J H g.) (-O :3" J 1'" ,2 p.— H P4. :13 .- 10'55-‘3 L‘ffilif. h'lf UL"? i'ERCtZ-u Ci {1'19 0;;on it 1'3 ”711311" {‘8'- cognizeu since pk: normal L’il is uo.ut Lha s-ga leoctt as Lao w 4 1 CD I badg. 2&0 tail length 244 bo;, ion in a your to no gosit'. V l; corrCLHted. gha ctn?r six Lraueg are 30; rated ad the axount of booalnb in tho 'ail; Eicura III showa savoral ‘ 01‘ "':' ' ‘,. v.. 44. L ’1‘ o ‘ wolv. " ' ‘.- . -1.‘ . . (11"1";IL 3 0.? 0513-; 2.7.1.1 1’? L3. 4.1“,133 ;.l1°~.“l.':lrc3 {3:6 0.. LI.“ p-wrfllzts L which bred tho sec rs tnnorttion ofls r1“L heroin mentioned. hull-INK." L9 Cr no I hrs no, or hJLO’t “a, visible :lc.hre in tho tail not tun atiffgccs is rad 11; felt by era inL Lhc tnil bettccn the tvumb and lore finLcr. .Eiw '=an might be -:19thon fOI'V‘JKJfVQl n;uwc UHIQS‘ tflgw‘t 11"“r9 pal utod to fiin:-vcr t?c vortcbrfil fiaiuns. In Grade 11 “re included thoza mica vbcwc I 113 show “MM” only one alight ”1‘"urc. Slitht flexura in a hnufl of about 3- 300 or 1883 from.thc usual ctreiiht, horizon;vl position. is with othor ”levurcs it n“? be flayed in w v rtic‘l or horizontal rluna. Two or core gliLht flexuros Worn clfisacd vs Ornie Ill. CH9 a 050cnced fle are, formic; more tram a JJ° HHLLG with the line the toil woulfi hvve formed had it been extahdcd straitht gut from the base, is consiccred Bride IV. the cost eumnon brour 13 Crnua V. more are Lathercd those oica With a or more pronounced flexurcs in shnir tails. Grade SI L88 tho pro wrbicl characteristic of tin p15 tail. 3 Spiral loosely or tiahtly coiled. Jo 1t m y t3 called tho so :‘k-smrcw Mi 1. Thea; tradna 're usually distlnbuiahwblc mt birth. fine cvn at loiat 3011 a chart tfiilcd noucc frgn one utth ncvorfil pro oumccd ”16?ur01. Yet no atifpxéss is nppcrout: howovnr, by vuvinh tow tu'l Sideways it may ha ?ecn “bother tho Eco! can bc ”t’vightflfind so tiqt it coon not rco;cnur whom the orc“1wrc ‘8 raccvei. If thv 2111 of 5 Lowborn animal can.ot he ’trilthtencfl in thin mfinrnr, 1t 13 rocordod 93 flcxcd. ‘ '_ . A o . ‘ __ u Tress (reins overlap. lee veriuuiliit I “ utinncuz. : , _V .- .. -\v . -,- " ‘. .- .. . " T J. 4" ,s . .." '., - . for eyed 1e 1 ;cuen tin J wiiyv» -i* rot, it ivo; be TQI”? z‘i:0'T1}e1 12*:5 liflifil _¢ur (Scarka I“ "'"oul.? 2 wwrir ft; Le V‘ .4 ~ " Our; 4. I" 5“ q ‘s. " - “:—..‘~- . ' . . .* r. ‘ - va . ,..~ of tr us .. vf'leq II an I! are llu‘tl‘q one dlnfirlg new r- x J ’1 HO 0 .Ad 4 [do (-0 .3 l h ( 0- 1 ‘1 C L". f (3 .0 L) able. gns ccgll :ozst pct breaks, beginiin; ?ith no Visible {lasers Mn; 0 small gradations arrive at a pronounced corkscrew. Jethofis of Lreedingz The matinb cages were inseected twice a neck for prebnast f sales. lhesc mere isolated to! in segurate cages so the gate of birth might be founl ca looking at the female each day until the litter was born. At intervals of three days after birth the litter was :heck- ed to see when deaths occurred. Khan the goon“ vere £1 to 25 days old the :othcr was reloved from them en: returned to the breeding cage. The litter was traded enfl recorded usually when the lother was removed. W View 0" the tail, sometimes tTo views if the flcxurcs were in oirferant plane., was drew uni the es? uni color of each mouse recorded. A mark was plsced ecr0*s the drwwiug of each tail at the farthest point from the noiy to 'kich the sti? aces eytcnd- ed, because it see f0381b19 tkst I Litht suave gently need to reclassif; tails accorlinfi to the emoont of stiffness toe; hue. fiefsrwnce lug he .wée to [ithrc I’I vhere the marks are ehown on the pictures oi the Lwils. From these ugfsgrisc were chosen mice of tha swme ‘r as as the parents to breed a new Ccnerution. brothers were always mated with sisters. several times I have obtained males like the Pneestor? but '.“' V , :emelee 51 fi‘tfi WitW thQfl, and vice earns. Jinee Flarei nice frem the éenerel eteek '. ' '1 , , . o g - 3 .‘ - .. . ‘ 8993 t tron? ln33 r¢v191y ih.n eeme nerve] utee, only fine v rewlthv o??? rim: “eceed ueswr’ble . .. . 4 I -' page . , I- ' . ', ' ‘ il‘ ants. Jon iii: re 3:n inner mfitlnc? tPW; anly (me 3‘3 3.9 of the 1:31; tenors-3.1.1.012, - . J ‘ ”.. ~.;- ' ... '- ‘ '1 t 1134 villetg, sew eterlle. yewn", :3 ~ ' . I f- _ .( ‘ 3 z. ‘ ‘ . - L15? '.; ()();.133 1‘43)”; (.vw'.l1 ‘lejm ‘Q‘I‘j {0t f" <~ ‘ -. “ 1" . 'l ‘ . ‘ ‘ "" ' ,A ~ '\ ‘- w .e,2u y a .~ :5 r1; -~wn Q71?L gut 1 i*M’tuve akull HR W ailnnt tastinony to racxrfl tba a fix'v o? ‘n'th. “fine“ [*turfil V158§111h ; U11 us fi'fl n. 8L11DPC Loramlk. gcwavnr, Lhd Q flnxe‘ 3109 is Worth; bf cum» rieon Tltn 8 us ;rvm tglljf t3 fl“ in," + s v 2 c?r“.d cff. .3 "a "711:3“h, «DU? bath 5720? m RQV‘EL thw m1 0 -0 fif£m it r: ¢~£~1uwis Y... La L... L: ' : l ‘r.q ” - - w . >1C‘ . ..|".\( “leg 1 he VLe.ed I. \ b C J. _C' L. , tho w'ny 531].. a? o” Lha 'wq mwwe deuLh u ... '4 ‘LqiiJar I.-. 101'; erve a3 a it Jgn L/ 4». N [)3 :133‘,1‘~1r3d t}};t r;.',r'-;.vl ‘..i_0.~3 '.'.-.J‘.{.l.\ git? Am; L ”(panic us; ,I.. .9 '. . q. I '~ ~‘ A .- - .' ! 1- . eauan taa.z?wg.HJ Jlaxed «ace. J'I o. P .. F {9“ . .- . ‘ x , ~’ _ -‘ . \ La- but) \JH‘.. ['q‘*‘J .I 3...; UL ‘L “.2, .Lo‘nu -L} L 4h 1 in, Jud L/’ .~ '. ’ ~. .1; ' ' «- « .. .- u' .. «j , , ,1 I ~. ." ~ 1 -~. . CA‘LJ' .'~U li'i“? \1 &V 5;") .6 {.341 NJ. I .I A.) L .A0 ’7 bi‘.‘ . 9(.') IL .: it --.- '. ‘ . .- " " /'- A “ 'I 4 ’1‘ . ' .: " ‘ ° S ‘ . ' ‘ a v ‘ '. ‘ .431. 5!- 1-1.9 « f ‘ rm: .‘ $18 a . -13 1;“) m3}: \.. 22.1.; e 1.. .1 m1 a; L. L- 1.9. 'in thg inbrn ding apgwrigant «s Livan in (3214 1:1 on p.55 bu.tg of the yang” horn uie vithin Eé guys. 13.6g from one to thrae c-ya Zrtur birth: 9.6g frun fat? to seven ouvs: 5.15 from fiigbt to fourtunn days: 5.43 frag fiftoen to t?efi:y-onq Sara find 2.75 f.cn t*out;-onz to twnpty-eiéht , . d"? .' '1 ‘ . 'jr- "- ‘ _,9 .. . ,0 , ,-,, ‘v . _. .. divs. Lu) 01 .K@ .g: 310d dizlnb tdn 4irat 'we&-~the unealc . .- 1-, H - '7 , .~.-~ ,_ 4w, _ .- ‘-. DanOd. 0»: fat: Lat g1"” yet W c$ud ~v ,0 .n» pro» vie L3 I; I D O '3 a v «I C? O -b -I-‘ I—a J 3 1.; c F 'v“ v :r 08.99 a? the gaunt who Viad ,J. N 9.. a 3‘ D *5 f“. )1 ‘9' 3 '3 ~. ‘J J; 1‘ h 1. I: 1 C" pa. ‘ 3 (M‘ -‘l 0 :his 13 er,ected, 3% for rOWl 99 .~ , ". , ' . ‘ ..- 4' I , ' . .‘_ H. =“£‘:’:_.~ (e? 2133 I, II, III} (31.231 4:) .3 cf. 1?)?! :8 z- 1:3 M33.“ in Lugrfl L: -03. do ion 3? high £133ura aces n;t influence the ilAI¢J1 acctwlifiy sf‘téxa‘giexed gouaa. 4JVF-3bort Lullad A. the poagibilit; thwt Siff“rana Crudfi: cf flexure , ' '. . '1 . ‘ I ' - n ' ' ‘ '- . : I z " ‘ ~- ‘ ‘ - Q‘ 23; be flyqu 13 ;chflgted TFCJ thfi GbsflqutLUH tflzt acre 10” fhfiu the flaronta are 10? rfide ride “wrnntfl tnnd to 1|;I1I {all . V‘.‘ hqvn aura hi . ~- 1 .‘ , r .- , — ,, H . . .9 b. gita tradaw o; ilavdra 8991 to 0‘,w-; mare ‘r8- ‘3. "1“’@\ ':=m 5n t‘ mr= 1“a3 put 7?“ “”‘ V v‘ ;fikfi111d wgwxrautly 3¢~1:‘W1 ‘ 310? "9%!”lnb v.13? LJ’z= s tlauth t‘YU'-v>:~ ““ ”ti“ 17;’ "*“””J. --. ”V‘W ux‘ ’i"“"; "it'snri; ”1.?1’5‘ 313-? .072..." i“.lt :Lbaufi ‘. ,‘...-_ .. +4 Lu .0 D ,4; 3 P U s a .5) Cu H 31 a; ) . I; (.54 J \JJ C. O 1 ‘ a. in.) ”I __lt p—J 7" -J J '75 a ('9 p o ,3 p ,1 I C , ( v; "J I I “I C i O ,3“ “.1 ,3 ~ I ,.. Pf fl i J (L ‘ V O- k a ,— V “a. I I C '5 L) Q ' (l) (2) (V) (4} (6) (7) (a) (9) 44 '~ '\ - * 9, IVCLUtic.-, ‘n'r‘qtjns '1’ {L . . '13,. ,w s5. itajfl. 1 ‘é‘* ' ‘ n" H n 'r' v ‘x ‘ ( O (i J. .. .,' ( o o L u 1., x. a U. J l J t, " II "’ " ‘. I, ' ~ 1 0‘ J. ‘- "“ ‘ . I utwblon “J ~.u. mhklrr :Ps. ' : 5-', ' w 1:: fig .9 ' 4‘ {.74 (:o 5 ”I p—k y'.‘ a} O «n4 l O .15 ‘P‘ C O r... r '4’ y' ' h '3 I r1 .‘f . '- ‘0. ’ ‘ ‘-9 ;-!*rg‘.ucé 01 ‘Lelfiu ‘.11 In t.“ mufig . .. g. l . ' 3 . 4 ’ ‘ .‘I ' ‘ ‘,'j .‘i.jl_n. 1:--. .L. Eli‘EIZ‘wi. I.” 14 {it} 1;; 317 J'_ ‘L-l: L‘ .'.,";~' Jf sciencn, gun .ruus, “ignitan, M;r3; ET, l-gJ. ghe plow; Cf Lgruul Jica lad v0.70 9 .Ifiv‘hd“) 1L1 Akin-LC) 3.13:1“ 2-.03Llr‘j VJ)... ~.-Jo pr. 5;“130 LRLDDFJ. -roportiozs 4nd cxdr char 0‘ 1*» .3d and unite QGlLd in gartxia‘guinvls Ly A. fiosdall in Jourhul of RuLholg§a ~n ,.:ty. 1939. V01. 14 pa. 195 - 1:3. ”urghy and $turn 1919 in Jr. 4gpar. fed. V01. 29, n. 1. Young in iJEn. Kai. Jour. 101. z:, n. ma, 1:23 finnnia in Evunt P153 , u. _ y. ' ‘ v " ‘ '~ _ 1 u l I ~. '9 J '. 1'! ’ _ , g, -, vv- { f, - {A v *v J J! . . -..) ._, 1 3 ' .f . . - 0 i t {.3 . a '1 .‘A (l 1 O ‘ . , sl 1 I. ( ~ 1’ ch hi! ‘4' '.‘ ~. ' ' ‘.\ "0" I" f .1"' in Journil o; hJerIcau uqtqun1LJ 2%. .~fiu. A dtudy 0? th} fifireiitNJy JLLLLR a? .139 I. :-, .:--.,...z.~.~..~.1:- gJ Jup'Lu .Lezsoe d3 r¢¢rla 1n flgficL: n youriti uf 111.8.t0 34/, V01. 4:). ‘43. LA. ‘- ‘JV 0 1:5, 14—41:! (JJ)) :Cflfnull 1)? "133;¢Ll i-8;}Mslctg7 .- " - ‘ n -“ . . v 01 \r - l‘ -00. .‘ l O ‘ t l ,‘ .Lkl :. -A/ J 11 .W. .x : “v.2.- (L- - a L \Jl. J t 3 Q: fiJbL‘l: ,' o (5 _,I" ‘ 3 \ :KJl. '3. 4‘". ' -\ d ,. a v2“ - n u»,.1 ~ ‘L‘U ‘.....'ui~.obk/ ‘5 u L nil. &V.A. :1) ‘ . 1 § * U "I s n s "‘ -I.'I nus: ‘ vVL: ‘ VI A ..1‘t-LL~}'11¢, ...-“4“ - u o ‘ 42 w ~ ~ ‘ .' (1‘0 ’ '. .J A. J I L 3.: J. (J "‘.J - .. e. ‘ o I ., 1” . ‘ ‘ ' I . . , . (14) 5'35;‘¢0';"Jlduq:a ...1‘3..‘1,"~ UP .‘.3 401.4 Ll: 4'4g‘aooL' a 44 . 'Q _ . ‘ . ‘5' P ‘ fl. '. 'I ‘ . d. ..J" :‘IA ‘5."‘ b dqulgll U A“ .‘l .1’;(‘L I “.IL (15) J: tifitictl gqtuoua . 55-39 Juulxszqi by ‘Jury'gul; a»: 40.. J.g 46 115' L3 1 ti ,,;";D I of b“‘A AH "_JG‘LOEJ 0.3 T ‘ A190 has. quD 17:;IQ‘V’FSLS ch‘L Lab I‘ *§.- INL5“‘I BLOOD “323A Wt»: 11.1 ‘ $50 ADD D A: “a“ :r,‘\ “11,119“ -------- "t‘1’--- ———— ' I QQZ£“Q 51:99--“ :-___&Q- ICIQBS ----- aia-*“’7 ‘ d 031137 ------ : Magi ‘- IH h.LEQ 430 ------ . 2Q381 ‘ I 30‘ 3% -------- / ----‘1... dc‘ galls-:3 : i : 3’b50‘ 350': 44C 5 Elgzad“'7 3335:9“933 ’ ' : 13b :9g§:'419§3’003: fit? I ..--"T- "‘129 I “Jpn! ‘J 3) ' 7‘ n r‘ 6 cells?“ : 3 3 000' 10a :539"%19’9 333' 41~ l a I o g I 33- , a. " *0 h +5 I 60 940- 1 .UJ.. 5XJ I 4 ." 9 " ' a '9' ' I" E 39% 1 20. 900' 33b E233 :4'103' 3 19b :53?: 9 :35 ~; 0 b D g I “ ‘ 9 : 30% i“’ 593. 990' 13a 1551>I QI0.99O: 33 {Sréi : 4d . 2, ‘900: I I) .33 00 I 4 I 309 :18m33 3. 1'99 Ia50 13'34019 " 149 :'06: I 443 i 456 g; 393 335: 123 :533 :3’683 333: 8b I235. : «Id I l 10 P 3 I 0‘ I ,b ' 34‘ 3 I i 3%; 121443: 993: 310 :99? ' «3 399: 2b 173?: : 939 C. E 3! I53? I 3b . 3, 11 .fOp. I Ua~ I 53 :c )3 . ah I I49 , 03 0a .931 I a : 3' -’ :41333 030' vb “9'33 ‘4.59r-)'033: l 1659*”: I 49:3 : 45b: :2 455' 0A,) I 11b :60 9 :r'. J)? 3)): 1948' :0) a: \3' 44h n '. b 2, 6"} 3;. 9 9, H- d- , a : 30? :4. 77) :033: ?‘ '99? '4,?90 033: 1:1 :OO°:.~ 339'0“09 99L I 35?. ..4 C193 . ') ' Ja :{kJ a :... '. 4.) ._)l 110 ‘L393 0 ' f’uuo’od ' {1.3%}: : 454 E4 539 Oi): 9” '69? '3'33: 9 0);: 119 1401>1?'1i3.'93: ;1f ' 499 '2 .C9"’ 3: ”3 {b00 I ’1:J:)J31 9” “Oa '4'5o3 99’: :11 : 599 ' 319 9',I 190 '432 '3’ 133 99 : 49 {253 39'qu .9991 31¢ ' :10? “’ 110 ’J : 199' M30 :3, 73:9.”I 93 ' Us ' ‘r‘ (.11 T991 4. ' " :3. UJ). 40 I I0 9U.-- 33)). ,5). '4‘)‘ .2: 9'0. (DJ. 4 L i 98: I73 333 I 333 {Cf-9° g 3.3139333: 130 105,0 {2’ 0713.833. 1m; I Dvll, '3 {j )_)\) . .y‘).)'9 3 J .J;)}1' '3‘) | 1‘. 3'5”) ' ,'."'-OO' ‘ | "2/36- I _;10 I ) _' * 103 -( C' 1 'Jgfi. A a 0“,; .900, JO. {P ' 490 :9 :30,J99: 13a :9): :JIlBQ OJUI :60 :09” I5 079’ ’3J0: 1‘0 : 42,3 [300.331.19‘) ' ‘-& .UJ . 0.113).: J\) I do .3030 : d7‘)’ ' I 353 .4 3J3. 33‘ 11 :630 1 933,3)): 83 .303 .4 I . 500 I oJ O 3 140 : JO '0" JJ.()' ' I ' I 9 _ ' 334 :3 ~4 33a Ib9” . ' I I ----- ' c 0 Q lJb I I I -- ' J}, '0. JJU: DO I - . I ' | ' -4-— I 4am ' U;0'9 ' boa . . . _-3-— ' 34’ Uid ‘ 0'0 I I J-“’ ' 4JI’O U4 Uto. I) : JL) . . _____ : 35R :4 JOJOJGO I 83 ' -J ----- : 33/? '3: (IL) 0 : 1..- | 5‘31'0 :. I I bin - hemofllo *h0b - 47 I I I I I I I I I I I I I I l I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I J I I I I I I Ran 31333 33113 433 31*:10315 03 313135 43; 3: 1153“ :‘113 133 1.1::33 3'2 '1 31:11 i””*‘V 1:3 .. ................... 1'. ..... 1-75553. ......... r. .............. ,....-- -... ..... Blaxad ........ .'. ..... 5313.511. ...... L----Homaz..31..,‘.--_- I I I I I I I I -nH.h-IEed-Qalla46:083IE.h-IEad-CallaéC:oaa}H.hJLEad- Cellalaross . I , . 1:5 3 135 I553 54,590,333i 105*} 50,5 3 4, 950, 000': 443* 40,15 I4,500,000I 1:“) .6016 I4,790,00J| 103 I 50.0 :4: J50, OOOI 4'10 45,3 : I 108. :65,5 :4,b90,000: 103 I 55,0, I 5, 000, 000' 4’10 533 n4,73 30, 003: 25 I543 15,470,033: 123 n5ofi.n4, 530, 0301 443 433 :3,323I 333: 115 .553 :4,25o,ouo: 135 I531.:4, 540 .000. 443 503 :5, 503 ,0313: 83 :533 :5,030,003: 115 :553 :5, 330, 000: 445 554 :3, 730I033; 13a 1350 :5,473,330: Ba :553 :4, 253, 030: 444 503 I4, {513,001 I 14-?" I 10 I) I5, 5'JQ,O'JO I 19b I 5J0 I4, 000, OOOI 44d 500 :4, 453,033: 135 :533 :5,233,033: 105 :553 :5, 030, 000: 444 453 :5,113,000 :13b :50; :4,330,030; 133 :553 :5, 550I000; 443 55,0 I23, 760, 030 I 128. III)‘ ,5 I5,lOO,O1‘;)OI 14a I50_6 I4, JU0,000I 4441 403 :4, 740, 033 :145 :50: :3,413,303: 155 :53; :5I500,003: 443 503 :5, 400, 300 :115 :553 :5, 333 .033; 155 :533 :5, 550, 000: 441 404 .3, 9.130, 030 I 95 .503 14,500, 03). 123 .120 I: 350, 000: 445 4); :3,-/3 333 : 95 :533: ,343, 033: 145 :55; :5, 433, 333. 44f 45; g4,. 390, 333 ; Ba 3303 :5 433I3.o); 115 g g g 533 .5, 313 303 I134 .533 I4I530, 333 I 95 I I I 533 :6I.m ,330 :135 :33; :4, 723, 333 :115 : : I 45; :5,110I303 :355 :55: :5 4 .000 g 83 : : : 453 :5,920, 030 :369 :503: ,060, 00 D c135 I I I 453 .5,333:311.35r .603 :5, 343, x13i105 I I . 533 : .153,013 : 9a :555' ,450, 030 :365 : : : 533 :3, 553, 003 :115 1533 :5Ic7oI030 :355 g I g 453 4 333I 030 .145 .554 5,940,333 .55: . . . 63$ :7: 0))IOOQ :363 {505 '5, 83), 000 I Be : : I 453 {5,333,133 :333 :33; 13,523,033 :115 3 g : 55.]? I1.) 33), OJO 3:16.13 I503: I4, 9-),3 030 I14?) I I I 553 :5, 4 0 000 :35: :50; '5,333 030 :353 : : : I I 1.132 I1,b:3 ,JJD II ’30 I I I : ', .5133 :0, UJJ, 3J3 :bdé : : I I I I I I I I I I I I I I I I I * Omit this horizontal row. 48 2 Seek: 3"""””"”"‘“‘“'1""""“"""‘"'1""‘“”""“""" S m+-flax¢d--.:_ -..-“in.--ffiatz..3t5.:.----6§..-.§amaz.fit.:.---- I I I I I I I 33.3.}Ead-0611646205645.h.136d 6-06115{0:0aaIH.h;L86d.cnllaLuraaa I I I I I I :503.: : 156 I :6, 050, 000: 8b :60,?3 :6, 590, 300; 44a : 4 :6,730,000: 13b : ‘ :6, 380, JOOI 8b I550 I6, 710. OOJ: 448 .606 .5,5 3,000. 108 .703 .6,153, 000: 106 .553 .6, 550, 000: 446 :503 :5,660,000: 126 :50; :6, 663 .000: 116 :603 {6,160, 000: 44a :60. :6,: 5) ,OOI: 120 :603 I6, 0‘30 OODI 100 I606 I8, 450, OOOI 440 .603 .6,573I003. 126 .553 :7I650I000# 106 .553 :7I460I000: 446 :506 :6,003, 003: 116 :50; :5,620,300: 166 :553 :6,060,000; 440 :553 g6,663, 000: Ba :503 :7, 473 .000; 126 .603 37,240,000. 440 .556 .6,663, 330 .1.36 603 .7, 7A0, 000. 9b .553 .7,540,000€ 446 :556 :7,660, 000: 133,6 :506 :6, 650, 000' 66 :603 :6,560,000: 446 I506 :7,573, 033 :1 6 233 :6, 930 .000; 106 :553 I6,55O,OOOI 44d .40. .7,050, 000 . 9b 603..6, 500, 000. 126 .503 35,400,000! 44d 1636 :7,060, 000 : 86 55. :7I 760, 000: 56f :503 {6,250,000: 646 :50} :7,030,000 :IOb $55 :7, 05) O-JJ:0 060 :55fi :5,500,000’ 44d I50 ID,8&0,0JJ I12b éOo I5,5BJ,OJJI 11b :55,b I5,500,000: 44d :55? :6, 70,003 : 6‘6: 50. :7,260,000: 666 : : : :506 g7,660,033 I666 60. :7,663,000: 566 . . . 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J - ., 5v .. .1» -. \— dah. - IL“ Parcent of Human Standard --- -..-—---——-1----&-----—~---~--.n--I-o- In------~---u---1--—-—~--------- -1 :1 .119 "Of a ' I - n I v ’1 e e " 8132. to E03102. “to 5?. '3}: I i E Birth :’(u}} 1:.1 i. .56 :14?) 13.7 a .64 1 26) 56.9 3 .VJ: . 1 ueek : (43; ...3 x .736 :(afi) $7.9 ¢ .37 :(14) a..5 : .u.: : L Eeeks : (32) ;n.g 3- .L334:l¢;) .1.5 J .3uu :(lfi) 30.0 3 .1?1 : 3 7-0-3513 l(5'1:2) .‘1/3- oil. |(L3‘.§; .7.) 3 .37.) [(1.01 £31 ,) J: o : I 4 Coin :{111}5'7..3- .31 "-0 Hind} ‘21.;5 4’ .151 :(lfJ 6J5? : .E.;: g 5 jeekg 1 (1H; 53.5 1. .11 :(151 .1. U :- .a? :1 45 01-» 3 lofii' : 8 003-128 1 {1; ) EASE. $1.1.) 1‘13} '11,. -+ ...lli 1‘ 2..) 53.3 g. I 1'53 4395513 :flft) 113:1..1 $1.10 Hl-‘é; Ln...- 4’ 1.4522; : : : 12 'e~ks :(14) 57.1 z-lux7 :(14; e70*.91.1: : 1 . ; Adults :tlzj uh.I x-l..1 .(10, 55.» 4'1.13 .112; 65.8 - 1.33: = ' ' 5 i. I I I I '. I I I I I 5 I I I I I I I I I I I O I l l Figure in () shows abe of mouse I ”a u . a. 1 .. . ‘- v.1u1.a #1-; .' .1 4 c a. T‘ ~’ \ (J ,3 . 1‘ . .11.: I .1. «:43 b birth ad adult 1 1 week .-----—----u-------------------------I-nn-~---fi--~-----—---------~m—u Liffarqnea hat:qqg “-“-- 59:2. 13. (,j - Fntn. .t. (1} - yr 3331. 1L. (L) - 313133 {J} - =1 313'31 (q, _ 13 4’11: -- I} 1; ( g _; ... 0‘ 15:1“? 1'". 3.1 ( g, ) - ‘ r1; F1932; 11¢,L- :4 flatraz (15;) - ;.. Flax?! i ;} - L FIQFQfl 3 1:0 .3t {,1} - -: 3y F13V31 11 - ; ‘land {g} - 7” “Inyqfi {3} - ~ P133133. (’1) .. ‘10 v19XDfi (a) - .3 519291 (33} — :3 '0 - - 4;. c. - 9 D. .1 - I . I. ‘ Q - I U - - 1‘. z.\l 31 2 42 L. '? DU - no I J II a” II N *3 "mp-mt ‘11. .Eul‘7LiL‘vT.t 3311 (p: or 2,-1?, 3) 1,53?.JJJ * 151,630 ‘HA1 (1. or 1.3-2.11) .' .3, J) i 2. 1.; , 11).) / ...-:23. i {H} or .13’1._W.:‘ 1:: 1-3. 1?},Ji) * 11%, [J 12. {-1 J: 351;),133 “1.11311 '1.» ,~;; .11. 1:191" 11... -J, 1 .2 7.13,) J t ”in, J 1.. (I) J: l--‘.1JLJ‘,\J.;J 111,513 t 11:,331 )2. IL}, V.‘ ...-..1),);'} 1.11.3.3; t “217,113 . ~L. (13) a. 11,111, i’J,3)3 1 "J“,Jg) . 1t.{li}1 ,11},JJJ ~ )1 1,-11‘11} t 11.31,}..1J . 1t. (33) or 11.2)), 121).;j 2) * 0111,1125.) ’Cfiuz;{cua Jtrnltht ' 0:}. ...-<- .—-\'_4-\}-Jo-._“ _1'73 a“ L' ' h " s It“ .3 1 a n 3 us ~ 0 .1 w .- 4: -.).L -/ . J 5' ) - . 's . _1} . : )) - I,“ . t ‘ MM.- . '- I“ "" ;‘ E I } 1 ‘1 H: \’ t 1 "- '~~ . - .1 ‘ I ,O O . ) b4 - 5-1 . : J3 . J ‘ 4" - 1) . 1' . ‘ _ \.‘ i ’3 z ’r .I . r I . L ' t . ,1 ‘ ‘1‘ . 1 1 ‘1 ~ " \ " o 9‘1 ) 9r v.1.),11) — 1,. . r", 1“ . ' . . ._ . . ' a. II. . :1 ,1 _’ t . [I ‘ I.) “ . ‘ x.- 1 " -\ ~.~ " ‘ J'- } U r 1 ‘l . " i -’ . v -1 J - U. . an: -,~, ' A ;.._' . 5' -1 J. 0 .I . .4 o " ' ' ' ‘ ‘ ~. . . '3) or 1.3).? ), J 1".) " .1, ° 1 N i u ‘ " _ l \ ,1 '2 ’ ‘ "t ' ‘ ‘ " 1‘ I L, I. J- 1 . 4‘ ' J -I . ..I' ) ) - y 5‘ ' f. . | . ‘ \- . J1. ). j 1).) t w J 3 . 1' I 1 9 ” I.” V’ ‘ 1 ..., '1 , 15),..11J1.) L’.‘f )}.I.)‘.; ) 1,211,311 " J’¢;¢4:’\).I'\—) - .... \}"I’;- ),\)Jsl " 14,0 1.1).) ,?.3,JJJ — 11,)a1,390 77 ”1.3:: our 0? Ti 33 93r3 ea L:- ‘10:) ~ 1. ‘_3 e.. \2 Q19?“ 1‘10") L 1.: '_' ~.'.‘ 1‘) 0'36 u-.--..--~-..-y~ .CI-------------g.------—-----*------w—o—--—-—---~-~------—---u~Clap-v.--- _- ;uubwr of ‘nga . 9-: - a l or . ‘-. ' - r V \fl ‘- - ‘5 6/1.; "’-Ira.-\.:a oguvba‘lll 'Yvrqr ‘L‘I‘d ..)i.':’3r8i.ce .43.“- 63813 1:3 :rg— liguie .LJfCt .-------O.--O-------———-—-~.-----op---.I-~'--~-0.0--.. --.n-—---------o --c>-.—-.--— .-.?t 4“l.;c‘_u3a..5 .9»J."‘Lo -b “a , «....Q;;l'.\ u' It. 83L" 9% (4) - '0 4L (k; r ..t: .‘>) - a. 13,,JJ 2 373,“;L) 1 15”, 3‘) 5.4 .1111. gt (1) - ; ,1 fl, ..‘3‘ 8,473. ',)..I' ~ ...; a}, .J} = <2; 1...»): 1 153,3}, 2.0 Latz it (~, - Au N.’;, at ,.x>, )1 — ,v';,‘J3 - 7 51)")? 1 11:7, 2-)") 22...: 39‘s it Q} - _u ;L : 3 c: 7,7‘),},~ - u,?93,913 = .. 133‘)th 1.4 Lint: at (a: - .o :t; :1) 0.: .;,s~1:,:3'?} - ;.-:::),")"3 = J1).239 1 ‘1?,‘)W 1.4 l~tz JL ("3) - .3 3: (:3; or 1- )b3,JJ) ~ ¢,c-3.1)3 = 3,.X73 1 iflk=,33gi 2.. ‘10“93 at “l?"n“fint ‘5‘3 Elaxad {1) — florai (7) or v.1;3,»3} - ¢,.LJ,)30 a 1,r.3,‘ i i 1%3,E’3 11 Fle"°r (L) - Eloy"? (l) or 1, 33,3)? - 3,1'3,333 3 1.533.) J 1* ‘?3 13.8 1'le"ed (:L) - .~‘m J (u; p; is, 3 .,_,;,’J;:.’;; “ . l N.- 5. I C . -" ‘ |. ~ ' J, as ' t ’ s, j s.’ .N 1* 7 I v " . ~‘ -‘ - r‘. g\' V I .- ‘.L;.‘-\r’ [.4 1 ‘J‘ (D L.” a d‘ ‘J. I ...: ".I I) I ‘p—- I 4“. f V r C: n, 4 .- I’N‘ ‘7 I. _' H- HIF’ N-ij. .‘- . ' F" .\ ...“ ‘3‘. 'V . ~ I \J \2 pl S... I - . up ' ~¢‘~JU O \ I .}..;(';. \ ' C I A b-0A. \ LJt b ...J {D (b L; A (T v I E.“ If- 1 , -\ ‘ ~‘ . n . ‘ ' . m 5Q . I ' \ . , ‘ - \ . ..4‘ 6‘ Al'h «“J, ku’ - *J. L'J. .. .u-IJQ H-' r‘ - ‘ z‘ehed (c, - , H J ‘3 Li‘- .... I- ‘ k L. i ‘ I \ § 5 K ‘ a m ‘ ‘ u i ' ‘ ~ 11V,J.J ¢.:,V.J Flexad (1.2.; - ‘3“ (3.3;) or “PI 5,5,, — L1,i'}'.2,J,U - 1 i ‘r‘ \x " ; ~ N "u‘uvll 1. {l ' . ‘.‘~ ., Ir,’ .. ' ,‘ - ‘1 .- Q y. e Lt ‘ C.- ) - 5‘ L ‘r' . 3 “-1 fl "1" 2: ) ‘p‘ 1‘ is i ' 3n‘ '0) 4) . ' I. .l ‘I) ‘ -‘. .1- . 6‘,- “v" ‘1‘ , J ‘J J ‘J. . II 34 I 4- L ’ I ' ...", ’ v I l ' r ‘ I ' j' i . ¢‘-.~“ , LLQI t : -‘l... ‘ ‘. * F ‘ “ “'1 "' .3 . " . “3 ’ " ' 3 I I. l "k .w ‘ :7 ‘1 5. -\ l '. ' ‘ V ‘ .3 .‘u 1" ‘0 :t? ‘ 1"»: '1 — . .‘D " y. E3 ‘1 “ 0") \J .l A- _. . L... j J . "I '. I, - ‘- ' .M . I . )1 .1 — fl ‘ ' '1 r‘ I - I ‘ 4‘ 4 J I; t i J . r -)J an .0 . II t" .-------~-------------‘-------n--p---—..--.- -----..--—--—---..—-~-—-- up... 61 TABLE OF DIFFQRJEGES fig ii.][::r fl (2 E; 1.1}53 fiumber of Zimes Eif Jarerce between Averé: has Difference 5x- oneds its Ero- babla Error .----—--’--—------------~--------——~----------------—---------I--. Played and Hate oz 1 us étralght Hetz 3t (1’ - Flamed (l) bf 1481 - ilbt = 20% 1 $4474 101 Beta 3t (L) - flexed (2 or 6157 - “”55 = I'Ll 1 5'” 1.5 Hetz at (S) - i1n‘w'ej (5} or 6532 - sass - 6:? . 5‘2 1.5 Plnxed (4) - hat; oi (4) or 7415 - ucflo ' t 6}} 5.2 Eebfl Jt (6) - 10: ed (6) or ddxd — 77JJ " 1 9.; Flexed (o) - n:LZ J: (a) or liLJJ - CYCO 3 gig” .30 1.8 iEBLZ at ‘1”), "' 91.31011 (LO) 0.." 1.11110 - O‘YJO 3 1;)? i 1535 1.4 Slexsd (12) - get; 12 t1;) 9: 1:7J3 - 11110 = yd GXQBGQS 900': 1076 uiffereuca flexed (ad) - hatz it (ad) of 13,330 — vSJD = 403 P5 exceeds ‘ 1120 pifference u g \r; K.2 Flsxed (3) ~ F0 33 (B) or 4897 ~ 3395 8 504 drror equals - 5 5 giffnreboe H0 St (1) - flawed (1) or 5300 - 4123 508 A t 2.24 ' 2.3 Flex-ed (EI " 1‘50 “313 (4} or fidééfi - QJJUL‘ - in} * $34 firror we efiri‘ 91ff9f°z.06 (3) a: 5:33 - 3&30 :33 ;rror ,yn°n*? 6'33 Difference (4) or 7435 - 3533 19¢5 .793 2.3 d (ad) or 11,333 ~ 11,030 1.330 1 1115 33 exceeds Difference Flexed (a) - HO 3t (ad) - F19? O i;; ';; II .D “:9 H-cr . .-------------------—--“---~--------------------------------------~ .. . ml: o. [1: . number of fimea airfarenca between Aver Les Difference 33- cceds its kro- b ¢le jrror .----~------————------~--u—---.--....-0—0-0—~-In---uu—uuu-n-----b------— :nterozypoua nyfi Eonozgkcufi struiokt Beta St (L) - go it (B) or 4133 - aha; = 196 * mod :5 3 xiffereLca Q0 it {1} - yntz 1t (1) or 500d - 1411 ' “ * $05 1.4 hats gt (L) - 10 at (L) or 0107 - QJJJ t 6131). 1.7 ;t (a) or 6502 - 5503 = 93; ‘ o»‘ I! C, . f...’ (I II "J :3. N1 Hetz it (b) - $0 1.5 HO 3t (4) - hatz at t :0 3t (ed) - h¢tz i .I: .12. Li exceeds ulff. N 1—”‘f b 4) or 5530 - 2-43 = 660 l ( 3 11300 - 1 r 10-0 1.3 (H 0 f1 2 CDC" 0 Conpwrison batween Adultd and Raw Born Flexed (ad) - Flnxed (B) or 19990 — 4127 = 570? d 858 6.6 Hetz 5t (96) - En*1 gt (a) or 9:33 - 4129 = a l 1 1038 ‘ 5.4 Ho 3t (3‘3 " 30 it 1;} (N: 11000 - lab-L.) :: .---------u--—-O-—---—-----O---O-—---—-...------------0-------------. ,. 10-nJI ‘ 63 F“ 1.9413343 0E L’lk‘r‘JI'JJLOJS P ‘“‘\T \ Ha.du¢bn-fl -------------------- ----- -----------—--------—-------------------.- Humber of Tina; -iffnreuce oetw 99a V9r4¢as bifference ?x- CGPdQ its ’?0- baule Jrror ?leval and fieterczyecua JtrQight i Hetz 3t (5) - ?14-nd (b b) o: (0.7 - 33.4 - Ll.& .95 hetz Qt (l) — -19xea (l ) or 37.9 - 19.3 = 5.; 3 .932 9.7 hetz it (2) — Mlexed (a) or 06.6 - 30.4 = 1.5 3 .95 1.9 Elexed (a) - 44¢: Jt (J) or 94.; - 4?.) = 1.; t .53 1.7 Hetz at (4) - flexed (L) or 01.6 - 07.9 8 3.9 t .92 4.9 {let}: gt ('0’ “..‘153,#.B.L (O) 01' 1)ch " 'J\JO'.3 “ i.) t 1.19 Eetz it (c) - Elaxed (1) or 66.6 - éé.d 3 1.9 3 2.4 riaxed (16) - “at; it (13) or 6J.J - u..o - .7 * 1.96 hetz 5t (1;) - :lexed (12) or 47.. - 07.1 = .4 t 1.6 flexed (ad) - Jet; 43 (aq) or 69.7 - 34.0 = 1.7 3 l.b5 3.5 Elexad 331 gomozjuuus straibht 80 3t (L) - alexed (3) or 55.: - .:.l 3 17.5 3 .9 18 "£0 at (1) "' .m'ui (1) CI' Suofi " "(9.0 = 406 t '94 ... ‘ E0 3t (2) - slayed (a) or 44.9 - .-.a = 4.4 t .51- ;.7 Flezed (b) ' to It {3’ or 5U04 - 0:03 : 604 £1.07 009 ho qt (4) - 313301 (4) or 6).) - 07.9 = h. i .91 4.1 E) 3t (5) }qufla (6) 0r 61-h - C). 6 = 06 Flazed (ad) - .0 at (43) or 66.7 - t).(: = ..9 1.66 |.6 Letaroxsbcus straight 4n; .o..o: geoua Jtraight 4414 gt (L) — .o .t (b) 40.7 - 44.2 = 3.4 t .24 4.0 Ketz at (1) - to at (1) or 57.4 - 4 .4 = 4.: t .44 5.0 50 3t (2) - Intz St (a) or 96.0 - L..C a .2 t .92 Hotz 3t (5) - 0 st (3) or 57.0 ~ 5 .4 = 5 k 1.04 4.8 Hetz 5t (4} - L0 Jt (4) or 51.4 - 83.3 = 1.: t .44 2.1 F0 3t (6) - This Lt (6) er 01.2 - £1.“ = .2 £0 at (ad) - 441. 5t (4i) or 4.3. - 54 = 1.: t 1.25 . _ .f r- TABLE (rrrwvn:9 -----------~--~o—— u..—gran—---..-------------’--o—-------‘------------- Lumber of :im \ ~1ff._‘r9ffl ‘03 bfmc") A” .v,?")1t ?"ed at Jifferent 4593 flexed (3) or 49. - u9.4 : FlGXBJ £13361 2 - {lagea (1) or 59.0 - 49 3 Played 5 315 ed J - flaked (4) or 5b.é - 07.9 or 69.6 - b .9 - Jl???i (1 V J ) ) - Flnzed (a; or 55.4 - 54.4 . I Elexed ) ) “AAA.A“AAA 6 flexed u - flayed (4) or ué.b - 40.6 Flared 10) - rlaxed(8) or 65.0 - 64.6 flexed 12) - ”19*nfi 10) or 67.1 - On Flevad ad) - Hierad(aj) 0r fih.7 - 67.1 Adults and Law born Flexed (ad) - 91999d (b or 6%.? - L9.4 ) “u at (ad) - go 5t (i) or 65.8 - 54.9 EGTZ it (35) - £452 »t(1)or 64 - $0.7 .---‘-----~----n-*-~--—-~------~--0—0-e—~--.--. or----‘fifihb-----b--------m G V. " D 9 2953 o (.3 ”$055 ‘ H II I'll” .97 .90 t.&4 $.74 t/Qé ‘ 1.339 3 1.0») 2.1 t 1 1.fi t 1.8 29 5 t 1. “.9 t 1. 3.4 t 1. (“it"( 0014.33 64 gifferenoe 63013 its Jr. bable irror 18.7 6.2 2.2 1.3 2"! \‘. .J . - — d 65 +nu:ss+anasgdcazagtaasaLsgssr canaqnuassa-aurccact+a:so:rsarung---»gntgr:a:ransL-sucanannu “ «m n «H .m Hw WM m m w m “ Hmwom mmdé " mm Wm wommmw mam M pH me m prom 4a:asaqaatua44nl4an-.1ancaonqsn1lficsa|maxa:19in::1:acas1auqsa41ulacwaufic:cascaJsuuualtual 1:3 H. H... 2 H a. ..H. ......H .2. H; ".... H... . . :2... H H H . . H H, H u . 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Iaunacfi. :4: fl 4 J fl J . f :0. . . . .- . . . . . 0 n . n . . . . . . . . ‘ . .a;. r .Qa.1;._b .ou..b .R.. u..0 . .fr.0.b.5.1.1.2.6.5.3. 0.13;...3. . .1..l...l. . .6. .7» my 3 . . . . . . . . . . . . . . . . . . . . aaaaaa th+il¢sttTtv+ltltcoTlc4:s129:. 3 . . . . . . . . . . t . . . . . . . . 1nu. . 3 n. .1.2.3.4.r...6.t9.1. d e . . . . . . . :11. a . 3f r . . . . . . _ .05. 4b . v.0.u. . . . . _ _ .hua.nu. "I- Thousands per cu. mm. fiuman Standard Percent of FIGURE I 67 CHARTS SHOWIKG ACTUAL VALUES 0? AV£?XGES OF BLOOD DETJRIINATIOHS 11 ,,/’ 10‘ ’ 9‘ ,’ '/ 8' / f“- - ./ 7‘ ,’ ./ White Cells ,’~ I 61 I” \‘ 1/ ./ / \ ,’ /"-"T?<~ / ¢ . /' ‘\ ' 5 , :7! ‘\‘\/ 6W, Birth.l 2 3 '4 6 8 10 12 Hem05lobin Birth 1 2 3 4 5 8 10 12 .____ Flexed _____ Hafiz. Straight Homoz. Straight ”Nari: .4flu... ...W .1. 1.33qu a 1&1! €- 1. M p. .. . g . .- 1qu u 1 . . 1 i CHART OF AVCWAG‘ 'F‘ 14 C) H KO llions per cu. Q I I l I 1~ / 0‘ I I I ’I I I ’I OH 54y l I \\ Birth 1 é L; U) 3 3 HO".’IIC C ACTU AL VALUES OF BLOOD DETERMINATICES Eed Cells ____._ Flexsd Hetz. Straight Homoz. Straight ‘00---- -- --- 0‘: C2 1 IIIQL1 FIGURE II 69 RATIO CELEBS OF bLOOD DdTJRJINATIODS 4.11 - f} g 4.o< d _- O ‘_,.. 0 3.91 4.1 O m 3'8 , White Cells 5) ' . l)€\ / H 3.7¢ . . ' ' , \‘\M/ 3 . 6JWWMM/vaybrx-HW 0L7 v v r v v v . ‘ Birth 1 2 3 4 6 8 10 12 I: d s ,, 1'3 ”“‘~ “I CU. -.. CH O p Q 8 hemoblobin S 11+ “H O U) 10 O 14 W cm 10 12 __/'\ _ 3 . O4 -... - ..:-:_:--'__-__—_";:. ———————————— m ’72:?” "'— ‘3 2 9< ' :3 0 r0 *’ 2.e< ‘H O - d m 2.7‘ Re Cells ND 0 #4 2.64 2.5; Blrth l 2 5 4 6 8 10 12 fl Yeeks from Birth blexed _____ netz. straitht ._”._.Homoz. Straight FIGURE III Grade I. no, or almost no, visible flexure. Stiffness easily detected in the tail. All views from ribht side. Grade II. One slibht fleiure in the tail. All views from right side. Grade III. Two or more slight flexures in t from right side. Cw 7x I #15 Grade IV. One pronounced flexure in the tail. M #20 Lateral he tail. All views #17 II 'i‘q' 71 Grade V. Two or more pronounced flexures in the tail. Right Side #6 Right Side Grade VI. Corkscrew tail. Dorsal ”jg/é“ A” #9 #7 Right Side / #10 ’ Rignt Side #81 #80 fl Short-tailed Grade. Tail is less than one half the length of the body. A 1 OI‘Sal #37 Dorsal #29 Numbers of OffSpring FIGURE IV DISTRIbUTIOh OE EIRST GquRAIIOH OERJERIHG ACCORDIHG TO GRADE“ II III IV V VI Short Tailed Grades of Offspring .___. High Grade ..... Low Grade OooooO Short Tailed Roman numerals on peaks of lines show grade of parents 72 ‘ . ~ < .v‘ . .r“ '1 ‘l ! ,~ '. , 1 ‘. 1 '1‘ , ‘ 1.)“: ‘1 \J vc'iiwo .Vl‘ ‘..- glib J- . 2.x. cunt Those 3Xc. ration hive m=19 13rc° . 'AA 0 1f! *, ‘ 3.x) S..;.. is. (:1 vlfififixfint is flratefullg .; , .' , . . .. o\.1.bi‘l‘..-..L1L.'I13 . L“ “‘1 ‘3'; r.- I " ' -lllll! d'. aw}; 1:. 1‘ .l.‘ . ' ’1‘ (1. V i a. 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