To the Editor:— The Universities Federation for Animal Welfare is compiling a handbook on the care and management of laboratory animals. The aim is to provide a concise, practical manual which will facilitate the uniform and humanitarian care of the smaller laboratory species, and it is in no way intended to produce a comprehensive monograph for each species. It is hoped to publish the work at such a cost that it will be readily accessible to technicians as well as to scientific workers. The different chapters deal with (1) animal houses and their pests, (2) the rat, (3) the mouse, (4) the rabbit, (5) the guinea pig, (6) the vole, (7) the hamster, (8) the cotton rat, (9) the deer mouse, by Prof. Lee R. Dice, University of Michigan, (10) the ferret, (11) the hedgehog, (12) the pigeon, (13) the fowl, (14) the canary, (15) the frog, the African clawed