114 



physicians, teachers of hygiene and domestic science, to college and 

 high school students, to travellers, farmers, merchants and the public 

 generally. 



A list of the sources of information consulted in the compilation of 

 •the book is given ; in this the names of all the leading periodicals in 

 which important articles on parasitology have appeared, or are likely 

 to appear, are included, as well as books dealing with parasitology in 

 a comprehensive manner. The book is well illustrated and contains 

 an adequate index. 



Increased Rice Acreage, Greater Malaria Problem. — California State 

 Bd. Health Mtldy. Bull., Sacramento, March 1918, p. 400. 



During 1917, 84,000 acres of rice were harvested in California, and 

 it is probable that this will be increased by 40 per cent, this year. 

 Since 95 per cent, of the California rice is grown in the Sacramento 

 valley, the malaria and mosquito problem will be of greater importance 

 than ever, while as yet no effective method of mosquito control, 

 without injury to the growing rice, has been devised. 



Hewitt (C. G.). Rats and Mice. Destroyers of Grain and Food. — 

 Canada Depi. Agric, Ottawa, Crop Protection Leaflet no. 7, 25th 

 February 1918, 4 pp. 



The dangers from rats, which, besides causing enormous destruction 

 of food supplies, are carriers of bubonic plague, which is transmitted 

 to man by fleas, are pointed out, and a vigorous campaign for their 

 destruction is urged. It is also considered probable that the rat is 

 an important factor in the spread of infantile paralysis or pohomyelitis. 



Lambert (J.). Phlebotomus Fever in Lemnos. — Jl. R.N. M.S., London, 

 iv, no. 2, April 1918, pp. 144-157. 



This paper describes an epidemic of sand-fly fever in the island of 

 Lemnos. The disease is prevalent there from May to September, the 

 majority of cases occurring during June, July and August, when the 

 weather is hottest. During the epidemic the commonest sand-fly 

 present at Lemnos was Pldehotomns papatasii. This was very numerous 

 on warm, close nights and could be caught in large numbers under 

 any artificial light. It bites j^ersistently, if undisturbed, and easily 

 passes through an ordinary mosquito curtain. In the vicinity of 

 Mudros there are ideal breeding-places for these midges, the native 

 houses being of roughly cemented stone, while loose stones lie about 

 everywhere. The camps chiefly affected lie along the foreshore 

 between the harbour and East Mudros village, and stray gullies 

 and an insanitary drain rmming down to the foreshore afford admirable 

 shelter for the larval stages. Individuals of P. papatasii have been 

 occasionally caught on ships lying about half a mile off Mudros, 

 having been blown off the land. No investigation was made regarding 

 the prevalence or otherwise of the disease in the inland villages. It 

 tvas found that the cases of sand-fly fever were most numerous 8 to 12 

 days after a period of close, sultry evenings, and this is easily explained 

 by the fact that the incubation period of the disease is from 2 to 4 days 

 and the period of development of the virus from 6 to 8 days. Tables 



