220 



Williamson (G.) & Oxspring (G. E.). Demodectic Scabies in the 

 Horse. — Vet.Jl., London, Ixxvi, no. 10, October 1920, pp. 376-379. 

 During an examination of about 220 horses in the Aldershot Com- 

 mand in July 1919, 40 showed signs of pruritis, which was attributed 

 to Demodex equi. The symptoms and treatment of these cases are 

 described. Skin dressing — with a non-irritant oil as a base and 

 containing sulphur — proved most effective in shght infections, but 

 when the disease had reached the j)ustu]ar stage treatment proved 

 more difficult and had to be very thoroughly carried out. All signs of 

 the disease should have disappeared for a week or two before the 

 animal can be considered cured. 



Holmes (R. P.). A Treatment of the Different Forms of Mange 

 and other Parasitic Skin Diseases of Horses and Mules with a 

 Combination of Calcium Sulphide and Horse Fat. — Vet. Jl., 

 London, Ixxvi, no. 10, October 1920, pp. 380-385. 



A combination of calcium sulphide and horse fat has proved to be 

 an effective dressing in the treatment of sarcoptic, psoroptic, symbiotic 

 -and demodectic mange in horses. The method of preparing and 

 applying the dressing is described. It is composed of 1 gal. calcium 

 sulphide solution (made of 2 J lb. sulphur and 1 lb. quickhme boiled 

 together in water and made up to 2 gals.) 2 gals, water and 2 gals, 

 horse fat, well mixed together and maintained at a temperature of 

 100° F, during the process of apphcation. 



This dressing has a marked efiect on the eggs of lice and apparently 

 destroys them by suffocation. It has a beneficial effect on the skin 

 and tends to promote the growth of hair. It has also been used with 

 success against forage mites and lice. 



WiLHELMi (J.). Die Kriebelmiickenplage. [Simuliid Pests.]— Jem, 

 Gustav Fischer, 1920, 246 pp., 23 figs. Price 13 Marks. 



This volume reviews the entire literature on Simuliids from the 

 zoological and medical standpoints. About 400 references are given 

 in the various chapters, some of which deal with the systematic 

 position, nomenclature, morphology, anatomy and distribution of 

 the adults. Others deal with the ecology and biology of the larvae 

 and pupae, which are described. 



The theories that have been advanced to account for sudden out- 

 breaks (>f these flies are considered, and a report is given on the recom- 

 mendations decided upon by the German Ministry of Agriculture and 

 Forestry on 10th February 1920 together with the practical conclusions 

 reached {R.A.E., B, viii, 112] in view of the outbreak expected in 

 spring. 



Condseness is a feature of this comprehensive work, the practical 

 value of which is enhanced by separate indices to the literature, authors, 

 and localities cited. 



Profilaxis del Tifus exantemdtico en Salta. — Anales Dept. Nac. Higiene, 



Buenos Aires, xxvi, no. 2, March & April 1920, pp. 133-138. 



[Received 11th October 1920.] 



In consequence of an epidemic of exanthematous typhus in the 



Provinces of Salta and Jujuy, where economic conditions and the total 



