790 EXPERIMENT STATK^N RECORD. 



The eradication of the cattle tick (Margaropus annulatus), D. E. Salmon 

 (Amer. Vet. Rev., 36 {1910). No. 6, pp. 679-682, fig. 1).—The author describes 

 a method of freeing pastures of ticks through a combination of rotation and 

 dipping. Three enclosures are made use of in this system. 



Cattle dipping tanks (Agi\ Jour. Cape Good Hope, 31 (1910), No. 1, pp. 

 33-31, pi. 1, figs. 6). — Dipping tanks are described and plans given for their 

 construction. 



Report on the disease known as '^ bluetongue " in sheep, H. Watkins- 

 PiTCHFORD (Natal Dept. Agr. Bill. 13, pp. 23, pis. 2, charts 8). — A general ac- 

 couut, in which the results af inoculation experiments are included. 



Braxy or bradsot in sheep, Milbradt (Berlin. Tierdrztl. Wchnschr., 26 

 (1910), No. 28, pp. 562, 563).— Out of a herd of 500 sheep 10 died from bradsot 

 or braxy. The pathological findings on autopsy wei*e practically negative. 



The bacterial flora of the intestines of the lamb, with particular reference 

 to the bacteria of the hog cholera group, P. Andrejew (Arh. K. flsiidhtsaiuf.. 

 33 (1910), No. 2, pp. 363-316). — Tlie author examined the intestinal contents of 

 300 animals and found, when working according to the Drigalski method, that 

 in 51 instances blue colonies were obtained. Of the 51 strains 12 had the 

 cultural and biological characteristics of the hog cholera bacillus group, while 

 the remaining 39 were transitional types lying between the Bacillus coli and 

 paratyphoid bacillus. 



Experimental transmissibility of variola of young pigs, I. Pcenaro (Arliiva 

 Vet., 1 (1910), No. 1, pp. 1-9, pi. 1; ahs. in Vet. Rec., 23 (1910), No. 1151, p. 

 156). — The author's conclusions are as follows: 



" The variola of young pigs is transmissible. The blood and the pus of the 

 vesicles are virulent. The virus does not grow upon ordinary culture media. 

 The spirochetiie found in the ulcers have no relation with the disease, but 

 merely represent an accidental infection." 



The veterinary control of swine plague and hog cholera, R. Ostertag 

 (Ztschr. Infeldionskrank. u. Hyg. Hanstiere, 1 (1910), No. 3-4, pp. 195- 

 213). — A critical discussion as to the individuality of hog cholera and swine 

 plague, and the methods for combating the same. 



Spirochaetae in lesions affecting the pig, J. A. Gilruth (Vet. Jour., 66 

 (1910), No. J/23, pp. 528-532). — An account of the occurrence of spirochetes in 

 lesions of somewhat diverse character as observed in Victorian pigs. 



A new hog parasite (, South. Planter, 11 (1910), No. 9, pp. 920-922, fly. i).— 

 The larvae of a bot fly which had cut its way from the side of the neck into 

 the larynx and there fixed itself securely in such position as to close com- 

 pletely the windpipe and thus cause the death of the hog has been found by 

 B. H. Ransom of this Department to belong to an apparently undescribed 

 species of CEstrus. The species is reported to occur in Virginia and West 

 Virginia. 



Pathogenesis of the accidents observed in horses during immunization 

 against meningitis, Briot and Dopter (Compt. Rend. Soc. Biol. [Paris], 69 

 (1910), No. 21/, pp. 10-13).— The accidents are provoked by the toxic principle 

 contained normally in the serum of the horse. 



The Strauss reaction for the diagnosis of glanders, B. L. Arms (Jour. 

 Amer. Med. Assoc, 55 (1910), No. 1, pp. 591-593). — " In the diagnosis of glan- 

 ders by the Strauss method it is better to use more than one guinea pig. Before 

 inoculating it is well to make a microscopic examination as a guide to dosage. 

 A culture from the swab often aids in the early diagnosis. Pigs should be kept 

 under observation for a month, and if a lesion of any kind is present, autopsy 

 should be performed and cultures made." 



