19191 VETERINAHV M iyi)TOTNl5. 879 



The relative potency of tail bled and carotid bled antihog cholera serum, 

 E. A. Cahill (Jour. Amer. Yet. Med. Assoc, 56 {1919), No. 2, pp. 111-185).— 

 This is the report of an investigation of the rehitive value as determined by 

 poteiiey tests of the following methods of bleeding for hog cholera serum: (1) 

 Carotid bleeding preceded by 3 tail bleedings 7 days apart, all within a 

 period of 38 days from the date of hyperimmunization ; (2) carotid bleeding 

 preceded by one tail bleeding 7 days apart, both bleedings within 17 to 21 days 

 from the date of hyperimmunization; (3) carotid bleeding only in from 10 to 

 14 days after the date of hypei'immunization ; and (4) tail bleeding 3 or 4 

 times within 38 days, after which the animals are injected with more antigen 

 and subjected to a second series of bleedings. 



The potency tests, which were conducted as prescribed by the Bureau of 

 Animal Industry, U. S. Department of Agriculture, for the testing of hog 

 cholera serum, indicated that there is apparently no difference in the 

 relative potency of hog cholera serum obtained from any of the four 

 bleedings described above, and that "the circulating blood of hogs properly 

 hyperimmunlzed against hog cholera retains its potency without the injection 

 of additional antigen for at least 38 days regardless of whether the animal is 

 bled one, two, three, or four times." 



The present status of hog cholera control, A. Eichhokn (Jour. Amer. Vet. 

 Med. Assoc., 56 (1919). No. 1, pp. 51-59; also in Amer. Jour. Vet. Med., 11^ (1919), 

 No. 9, pp. 465-410).- — This is a general discussion of hog cholera, its relation to 

 other diseases of hogs, and measures for its control. 



It is emphasized that while lesions produced by other organisms are new 

 occurring \\-ith greater frequency in hogs, an effective and successful control 

 of hog cholera would result in a very pronounced decrease in other infections. 

 Vaccination, with a clear sterilized serum and virus free from all possible 

 contamination, is considered by the author to be the foundation of the control 

 of hog cholera. 



An estimate of the number of cysts in a case of pork measles, M. C. Hall 

 (Jour. Amer. Vet. Med. Assoc., 56 (1919), No. 1, pp. 11, 72).— This is a brief 

 account of a case of pork cysticercosis found in a young animal at the abattoir 

 at Rosslyn, Va. The carcass, which with head and viscera removed weighed 56 

 lbs., was estimated to contain 190,470 cysts. 



Horse sickness in the Belgian Kongo, R. Van Saceghem (Bui. Soc. Path. 

 Exot., 11 (1918), No. 5. pp. 423-432; ahs. in luternatl. Inst. Agr. [Rome^, In- 

 ternatJ. Rev. Sci. and Pract. Agr., 10 (1919), No. 1, p. SO).— The author found 

 that "heartwater of sheep produces horse sickness but can not be transmitted 

 to cattle. The virus of horse sickness gives feverish reactions in goats and 

 sheep. The virus of horse sickness and that of heartwater appear to be two 

 varieties of the same virus. Horse sickness was propagated at Sambi especially 

 by Culicoides and Tabanus." 



Joint-ill and its treatment with serum from the blood of the mother, 

 Mann (Ztschr. Veterinark., 29 (1911), No. 3, pp. 65-81).— The author reports 

 excellent results obtained in the treatment of joint-ill of foals with blood serum 

 from the mother, and even better results in the use of the serum as a means of 

 immunizing foals against the disease. As an immunizing agent the serum 

 was injected intravenously in amounts of from 400 to 500 cc. or. if the animal 

 was very restive, from 2.50 to 300 cc. was injected intravenously and a like 

 amount subcutaneously in both sides of the neck. 



Tables are given of 36 cases of joint-ill treated with serum and of 12 cases 

 in which the serum was used for producing immunization. In the former 86.4 

 per cent of the animals recovered and in the latter there was no loss or injury. 



