BOOK REVIEWS103no indication of the sampling techniques used. This is important since theauthor imputes a representational nature to the results and makes a numberof generalizations which have to be taken with considerable reservation.However, on balance I am glad that this work has been published. It use-fully augments our knowledge of the Tonga; had more caution been exercisedin the handling of the data my approval would have been without reserva-tion.University of RhodesiaM. W. MURPHREEJubilee Scrapbook: 1952-1977: The Commandery in Central Africa of theGrand Priory of the Most Venerable Order of the Hospital of St fohnof Jerusalem Compiled by J. G. Stony, Salisbury, M.O. Collins, 1977,viii, 87 pp., illustrated, Rh$7,00.Last year saw the centenary of the Order of St John in its present formand the Silver Jubilee of the Commandery of Central Africa which wasseparated in 1952 from its parent Priority in Southern Africa under whichthe local St John Ambulance Association and Brigade had operated since1920. The break-up of Federation resulted in the Commandery of CentralAfrica being restricted to Southern Rhodesia and in the setting up of the StJohn Councils to continue the good work in Zambia and Malawi. Politicshave not, however, changed the position of Sir Humphrey Gibbs who isKnight Commander Š that is, the Governor of Southern Rhodesia, byconvention.The compiler has kept the history and description to a minimum inorder to make his story more vivid by the use of illustrations and reportsfrom newspapers of the time. It is to be hoped that this story of good willattract more people to support the Association and Brigade in these difficulttimes.R.S.R.