124 



Pettit (R. H.). Roach Control.- J/. Econ. Entom., Concord, N.H., 

 xiii, no. 2, April 1920, p. 260. 



A bait that has been found efiective against Periplaneta americanay 

 a large cockroach that has been established for several years in the 

 buildings of the Michigan Agricultural College, consists of a thin gruel 

 of cotton-seed meal sweetened with a little molasses and cooked ; 

 to this when cool, is added a cake of veast, and, when fermentation 

 has started, a little dry powdered lead arsenate is stirred in. The 

 bait must be kept moist to be efTecti^e. 



Balfour (A.). War against Tropical Disease.- London, Wellcome 

 Bureau of Scientific Research & Bailliere, Tindall & Cox, 1920, 

 220 pp., 180 figs., 2 graphs in wallet. Price 12s. 6d. net. 



The papers in this book have been termed seven sanitary sermons 

 addressed to all interested in Tropical Hygiene. All have previously 

 appeared except that on " The Palm from a Sanitary Standpoint." 

 Those on " Tropical Problems of the New World " and " The 

 Medical Entomology of Salonica " have already been noticed [R.A.E., 

 B, iii, 69 ; iv, 179]. The contents of " Preventive Inoculation 

 against Typhoid and Choleia " and " Sanitary and Insanitary 

 Makeshifts in the Eastern War Area " are indicated by their titles 

 " Seme aspects of Tropical Sanitation " and " The Problem of 

 Hygiene in Egypt " deal with the prevention of diseases which are 

 communicated by bad sanitation, the majority being insect-bonie or 

 helminthic The difficulties of climate, environment and population 

 are considered, and the faults cf the present system, with a Central 

 Administration somewhat out of touch with the Public Health Depart- 

 ment are indicated. A solution of the latter problem under a Ministry 

 of Health as recommended by the recent Commission is outlined. 



The book as a whole is intended to emphasise the importance 

 of Tropical Hygiene and to bring home its lessons both to medical 

 and lay readers. It is a very interesting introduction to the subject 

 rather than a text-book, but, even so, its value would have been 

 increased by an index. 



James (Lt.-Col. S. P.). Malaria at Home and Abroad.- London, 

 John Bale, Sons & Danielsson, Ltd., 1920, 234 pp., 104 figs., 

 Price 25/- net. 



This book gives a more extended account of the subjects dealt with 

 in an article published by the Local Government Board [R.A.E., 

 B, vi, 236]. It is intended as a guide to medical men and administra- 

 tors who may have to deal with malaria at home or abroad during 

 peace or war. The malaria parasite is described, together with its 

 stages in man and in the mosquito. An account is given of mosquitos, 

 their life-history and their control. The system of making a malaria 

 survey is described, while the clinical aspect of the disease and the 

 S}mptoms, diagnosis and treatment of it and of its complications 

 are dealt with in detail, as well as the methods of malaria prevention 

 and eradication. 



