Leitfaden der Hygiene.

The fifth edition of this treatise retains the good points of the earlier editions and is well brought up to date. Gärtner's "Hygiene" is a good example of the compendious German handbook. It deals with all of the most important hygienic questions of the day and gives a well-balanced view of such problems as water-supply and sewage-disposal, the hygiene of dwellings, clothing and diet, school hygiene, industrial hygiene, and the infectious diseases. Gärtner is of opinion that bovine tuberculosis is not one of the most important sources of human infection. In the section on methods for isolating the typhoid bacillus no mention is made of the malachite green medium which many recent investigators have found especially useful. Gärtner does not lay as great stress on the rôle of house-flies in spreading typhoid fever as most recent writers on the epidemiology of typhoid have done. A valuable glossary by Dieudonné of