The author distinctly wants it understood that this manual is written primarily for medical graduates. The subjects include chemistry, bacteriology, protozoology, helminthology and meteorology. It is written with directness, so that there is little waste space. Because of the difference in English pure food laws, many of the food analyses might not apply to American equivalents. The author does not expect physicians to be trained chemists and hence this material is condensed and all discussions are brief, much that is considered to be outside the realm of the ordinary public health officer being dispensed with. There are, however, much information and many illustrations which a doctor called on to assume part time public health duties would find of assistance. While not meeting any urgent need in this country because of legal and geographic variations, this is an eminently practical book.