382 EXPEEIMENT STATION RECOED. 



numerous experiments of the committee in immunizing sheep to either louping 

 ill or braxy by subcutaneous inoculations of cultures of the bacterial organisms. 

 Treatment by means of drenching, however, was very satisfactoiy. This con- 

 sists in adding cultui'es of the organisms in question to the water which is 

 given the sheep, and in oi'der to be successful the treatment must be applied at 

 seasons when sheep are naturally somewhat resistant to the diseases. It is be- 

 lieved that this method of drenching may prove successful in the case of other 

 diseases. 



Experiments in vaccination against contagious agalactia in sheep and 

 goats, A. Ceixi and D. de Blasi {Clin. Vet. [Milan], 29 (1906), No. 32, pp. 

 169-773). — A test was made to determine the effect of virus filtered and heated 

 to temperatures ranging from 40 to 45° C. for a period of half an hour in vacci- 

 nating sheep and goats against contagious agalactia. It appeared, during the 

 investigation of the authors, that goats and sheep could be completely protected 

 in the majority of cases against subsequent infection by treatment with virus 

 previously heated so as to attenuate it. The use of milk from cases of the dis- 

 ease previously rendered nonhifectious gives no benefit, since such milk appears 

 to be without imumnizing power. 



Malarial catarrhal fever or bluetongue of sheep, E. M. Jarvis {Rhodesian 

 Agr. Jour., 3 {1906), No. 5, pp. 513-516). — Bluetongue has been studied by the 

 author during the past 5 years. The symptoms vary considerably, but there is 

 ordinarily a high fever and inflammation of the mucous membrane of the mouth, 

 which becomes reddish or occasionally blue. The mortality is not very high 

 and the post-mortem findings are not striking. If the disease occurs in a 

 virulent form it may be controlled by vaccination. 



The benefits of sheep dipping, F. S. H. Baldrey {Agr. Jour. India, 1 {1906), 

 No. 3, pp. 201-20Ji). — The regular periodical dipping of sheep is desirable and 

 in many cases necessary not only in the control of sheep scab but in destroying 

 other animal pai'asites which may be found in the wool and on the skin of 

 sheep. 



Pseudo-tuberculosis of sheep and its relationship to echinococci {Dcut. 

 Tierdrztl. Wchnschr., IJf {1906), No. 29, pp. 3Jf6-3JtS, figs. 2).— The micro- 

 organism of this disease was isolated and studied in pure cultures. A number 

 of experimental inoculations were also made, and the author gave considerable 

 attention to a study of the distribution of the organism in the infected animals. 

 It appeared that in certain instances the bacterial organism was carried 

 through the cells of the intestines through the agency of echinococci carrying 

 bacilli. 



The method of vaccination for swine erysipelas, Pflanz {Deut. Tier- 

 arztl. Wchnschr., 14 {1906), No. 27, pp. 321, 322. figs. 3).— With an ordinary 

 hypodermic syringe considerable trouble is experienced in vaccinating hogs 

 without hard work and the probability of becoming badly soiled. The author 

 uses a syringe furnished with a rubber tube one-half to one and a half meters 

 long. As soon as the needle is inserted into the skin back of the ear the hog 

 may run about the pen somewhat but the length of the tube enables the opera- 

 tor to prevent the needle from being withdrawn imtil the serum has been 

 injected. 



A pulmonary disease of rabbits due to bacilli resembling those of swine 

 plague, II. Selter {Centhl. Bald. {etc.]. 1. Aht., Orlg.. Jfl (1906). No. .',, pp. 

 .'i32-.'i35) . — An outbreak of a pulmonary disease occurred among rabbits and 

 was studied with the result that an organism was found which closely re- 

 sembled that of swine plague and must be referred to this group of bacilli. 

 The exact relationship between the two is not yet determined. 



