680 EXPEKIMENT STATION RECORD. 



The chemical control of cattle dipping tanks, C. Williams (So. African 

 Jour. 8ci., 11 {1915), No. 8, pp. 281-296) .—The author reports upon investiga- 

 tions of oxidation in arsenical solutions made up in the laboratory and of 

 arsenical fluids in dipping tanliS, substantially noted from another source 

 (E. S. R., 31, p. 776). 



[Disease of sheep at the Kodiak Station], M. D. Snodgrass (Alaska Stas. 

 Rpt. 191 Jf, pp. 77, 78). — ^A description is given of an outbreali of a disease in 

 the flocli of sheep at the Kodiali Station. It appears that the sheep had been 

 fed partly upon hay of poor quality and somewhat moldy, and that this was 

 apparently the cause of the disease since none were affected after changing to a 

 different hay. Of the 30 ewes affected 17 died and 13 recovered. All of the 

 sheep which survived shed their wool, some losing practically all of it. 



Otacariasis in the Bighorn, H. B. Ward {Jour. Parasitology, 1 {1915), No. 

 3, pp. 121-127, pi. 1). — A new sarcoptid mite which heavily infested the ear of 

 a mountain sheep at Estes Park, Colo., is described as Fsoroptes cervina'. It 

 is pointed out that this mite is quite similar to one found in the Pyrenees and 

 in the Congo. 



A list of 11 papers referred to is included. 



Dipping vat for hogs and dips; hog worms, lice, and mange; hog lots, 

 houses, and water supply, C. A. Oaky {Alabama Col. Sta. Bui. 185 {1915), 

 pp. 35-58, fig. 1). — Practical information is here supplied as to building a 

 dipping vat (see p. 691), with brief descriptions of the more important parasites 

 of swine, and notes on hog cholera, sanitation, etc. 



Combating hog cholera, Nevekmann {Berlin. Tierdrztl. Wchnschr., SO (1914), 

 No. 13, Bcilage, pp. 19-21; Nos. 25, pp. U1-U5, 26, pp. 457-459, figs. 3).— 

 The chief reason given for the great increase in the number of cases of hog 

 cholera in Germany is the failure to report the existence of the disease to the 

 authorities. The veterinarians may also be at fault. Another reason is the 

 shipping of animals from districts where the disease is prevalent and where 

 vaccinations of hogs against erysipelas have taken place. The difficulty in 

 differentiating hog cholera from swine plague in some instances is pointed out. 

 Various recommendations are made for the purpose of improving conditions. 



The bacillary pest, typhus, or paratyphus of shoats, L. Cominotti {Clin. 

 Vet. [Milan], Rass. Pol. Sanit. e Ig., 37 {1914), A^o. 23, pp. 989-1004, pis. 2; ahs. 

 in Internat. Inst. Agr. [Rome], Mo. Bui. Agr. Intel, and Plant Diseases, 6 

 {1915), No. 2, pp. 267, 268). — The investigations conducted by the author in 

 Italy have been summarized as follows : 



" There is also a bacillary disease of pigs in Italy of a morbid type having 

 enzootic characters and a bacillus of the paratyphus B group and which, 

 though distinguished by its epidemiological, clinical, anatomical, and patho- 

 logical characters from swine fever with a filterable virus, has great affinity 

 with it. The Voldag.sen bacillus which causes this form of the disease is dis- 

 tinguished from the swine fever bacillus by certain cultural characters and 

 especially by determined biological characters. The disease produced arti- 

 ficially in young pigs less than four months old by the ingestion of a culture of 

 Voldagsen bacillus is transmissible by contact to healthy young pigs of the 

 same age. Similar infection under the same conditions in pigs of the same 

 age with the swine fever bacillus is not transmissible by contact. In small 

 doses (2 to 5 cc.) the anti- Voldagsen vaccine does not protect the young pigs 

 from infection by contact." 



A list of 25 references to the subject is appended. 



Casuistical, bacteriological, and patho-anatomical discussions of shoat 

 typhoid with special regard to the distribution of this disease, W. Pfeileb 

 and K. Hukleb {Mitt. Kaiser Wilhelms Inst. Landiv. Bromberg, 6 {1914), 



