162 



In testing the effect of heat and moisture on the mites and their 

 eggs it was found that moderate humidity and temperature are 

 essential to them. This and the fact that exposure in a steam hut 

 to a temperature of 65° C. killed all mites in 25 minutes shows that 

 they may be dealt with by the moist or dry heat methods suggested 

 for louse destruction [see this Review, Ser. B, vi, p. 219 etc.]. 



The cliief points in the diagnosis of scabies are quoted, and rules 

 are suggested for the carrying out of routine inspections and the 

 method of examination. The treatment advocated consists of 

 systematic mechanical measures of washing, etc., which aim at rupture 

 of the burrows and consequent exposure of mites and eggs, followed 

 by the application of an acaricide, sulpl.i.r ointment 1 in 15, liquor 

 calcis sulphuratae or balsam of Peru being suggested for this purpose. 



Vincent (G. E.). Review of Work for \%\%. —Rockefeller Foundation, 

 Neiv York, 1919, pp. 13-17, 2 figs. 



The attempt begun in 1916 to rid a community of malaria was 

 continued in the year under report. The breeding of Anopheles in 

 four towns of Arkansas was almost wholly prevented. Medical 

 returns show a reduction in the number of calls varying from 80 to 

 974 per cent. There is every reason to believe that this work 

 undertaken by the U.S. Public Health Service will extend and that 

 in the early future the State will take over the entire responsibility. 



In view of the outbreak of yellow fever in Guatemala quarantine 

 was immediately established and prompt measures taken to control 

 the disease. This attempt succeeded by December. A commission 

 was sent to Ecuador to study the bacteriological, chemical and clinical 

 aspects of yellow fever. Much valuable information was obtained 

 and systematic measures are now being taken to eradicate the 

 mosquito {Stegomyiajasciata) which is the sole transmitter of the disease. 



Chandler (W. L.). Ox-Warbles.— Qr«W?/. Bull. Michigan Agric. 

 Expt. Sta.y East Lansing, i, no. 4, May 1919, pp. 166-167. 



The information here given on Hijpoderina bovis and H. lineatwn 

 has previously been noticed [see this Review, Ser. B, vi, p. 45 etc.]. 



Ross (Sir R.). Malaria Reduction in Cyprus. — Brit. Med. Jl., London, 

 no. 3059, 16th August 1919, pp. 220-221. 



Attention is drawn to the success of the anti-malarial campaign in 

 Cyprus. The number of cases has fallen from 7,342 in 1913 to 2,205 

 in 1918. 



HiLDEBRAND (S. F.). Fishes in Relation to Mosquito Control in Ponds. 



— U.S. Public Health Repts., Washington, D.G., xxxiv, no. 21, 

 23rd May 1919, pp. 1113-1128, 6 plates, 3 figs. 



Investigations as to the importance of fishes as eradicators of 

 mosquito larvae are described. The observations were chiefly directed 

 to determine the value of the top ininnow, Gambusia affinis. Nearly 

 all the ponds in Augusta, which is the county under consideration, 

 are artificial with sloping shores covered with acjuatic vegetation. 

 The newer ponds have steep banks. 



