384 EXPERIMENT STATION RECORD. 



the author concludes that this substance is capable of fully destroying the 

 viability of the tubercle bacillus, and that bacteria so killed are very efficient 

 for immunizing purposes. 



Report of the International Commission on the Control of Bovine Tuber- 

 culosis (U. »S'. Dcpl. A(jr., liar. Aiiiiii. Indus. Virc. Il.'t, pp. 21). — This is a de- 

 tailed report of the various committees of this connnissiou, who conducted in- 

 vestigations in regard to (1) education and legislation, (2) location of tuber- 

 culosis in cattle, (3) dissemination of bovine tuberculosis, and (4) disposi- 

 tion of tuberculous animals, together with 15 resolutions adopted by the com- 

 mission as a whole. 



Report of the International Commission on the Control of Bovine Tuber- 

 culosis {Ottawa: Govt., lUlO, pp. 41; reprint from Proc. Amer. Vet. Med. 

 Assoc, 47 {1^10), pp. 31; abs. in Intermit. Ceiitbl. (Jcsum. Tuherkulose Forsch., 

 5 (1!)11), No. J,, pp. 213-215).— ^oted above. 



The occurrence of actinomycosis in cows' udders, J. H. Patterson (Vet. 

 Jour., 67 (lull). No. 431, pp. 260-271). — In investigations of about 50 speci- 

 mens of udders (examined within a period of 2 years) suspected of tuberculous 

 lesions, the author found the lesions in 5 of the cases, or an average of 10 

 per cent, to be due to actinomyces. 



Contag'ious granular vaginitis in cattle, and its relation to sterility and 

 abortion, A. Wilson {Vet. Jour., 66 {1910) No. 422, pp. 460-482) .—This paper 

 discusses the etiology, symptoms and course, differential diagnosis, therapeu- 

 tics, sequeke, etc., and reports cases of this disease. 



Of 1,800 head of cattle examined by the author within the year, 60 per cent 

 of the females were affected with chronic vaginitis follicularis in varying de- 

 gree ; most of the animals were bred in Essex, while others were brought from 

 different counties to be tested. It is stated that not a single case of the acute 

 disease, as described by European writers, has presented itself. 



"Contagious granular vaginitis is to be handled as an infectious disease on 

 the usual lines, disinfection and isolation being essential for its control and 

 eradication. The earlier stages of the malady call for curative and prophylactic 

 measures somewhat similar to those recommended for epizootic abortion. (1) 

 antiseptic irrigations of all animals, diseased and healthy; (2) cleansing and 

 disinfection of the external genitals, tail, and hind quarters; (3) disinfection 

 of the cowsheds or other infected buildings, especially floors and gutters or 

 channels; (4) isolation of diseased, suspected, or newly arrived animals; (5) 

 cessation from breeding for a reasonable time, 6 to 8 weeks (3 months after 

 abortion). The later or chronic stages do not appear to require any treat- 

 ment." 



Eradicating cattle ticks in California, W. M. Mackkllar and G. H. Hart 

 ([/. *S'. Dcpt. Agr., Bur. Aiiim. Indus. Rpt. WOO, jrp. 283-300, pi. 1, figs. 4; Giro, 

 174, pp. 283-300, pi. 1, figs. 4). — The authors first review the conditions obtain- 

 ing in California prior to the commencement of eradication work in July, 1906. 

 Upon investigation in that year San Luis Obispo, Santa Barbara, San Diego, 

 Orange, Fresno, and Ventura counties were found to be heavily infested, and 

 Tulare, Kern, Kings, Los Angeles, Riverside, San Bernardino, and Madera 

 counties were found to be infested to a lesser degree. 



In discussing the methods used in tick eradication in California, they con- 

 sider the dipping solution, its preparation and use, and the dipping vats found 

 most practical, namely, the swim vat, cage vat, and wade vat, with detailed 

 illustrated plans for the construction of the first 2. "The dipping season in 

 California begins about April 1 and must continue at 30-day intervals until 

 8 or 9 dippings have been made in order to clean the range in one season. Dur- 



