The Rat, a World Menace

very interesting. It is dedicated to the Medical Officers of Health of Great Britain " whose courage and sagacity have saved the administration of an unsatisfactory Rats' Act from being utterly abortive." In an introduction to the book, Sir Thomas Horder, k.c.v.o., F.r.c.p., writes that the book is not merely a standard textbook on the subject, but that it is a model for others who seek to add to the literature on pestology. Chapter I deals with the history of the rat, and of rat migrations within historical time. The different species of rats and mice are described, and an appendix gives the draft of a Rat Destruction Bill presented to the House of Commons (but not passed) in 1919. In