VETERINARY MEDICINE. 85 



Tubercle toxin studies, II, A. II. Haentjens (Ztschr. Tuhcrkulose, 11 

 {t'.itn), .\(i. -J, piJ. 323-SJl). — Suspensions of tubercle bacilli in pliyslological 

 salt solution, glycerin agar, cultures of tubercle bacilli, and cultures of glycerin 

 and potato were kept in a filter in an autoclave for 14 to 30 days. During this 

 time the filtrate contains the true toxin of the tubercle bacillus. The material 

 is called filtrase by the author and varies in strength according as the cultures 

 are made in physiological salt solution, glycerin agar, or glycerin and potatoes. 



This material was tested first on healthy and tuberculous guinea pigs with 

 encouraging results. In healtliy guinea pigs it was iiossible to administer 

 doses of reasonble size without producing either toxic or thernnc effects. In 

 Larger doses of a stronger filtrate, the material produced only slight toxic reac- 

 tion. In the case of tuberculous guinea iiigs, the use of this material caused 

 an imiirovement of the general condition or a complete cure. 



The material has also been tested on tuberculous human I)i'ings with satis- 

 factory results. 



Cultures of tubercle bacilli in vivo and vaccination against the disease, 

 (}. Morssu (Rcr. Med. Vet., S.', {HlOl), A'o.s'. 21, pi). 101-112; 23, pp. 110-116).— 

 Ill the investigations reported in this article the author was concerned in ob- 

 taining evidence on the influence niton the animal organism of the prolonged 

 cultivation of tubercle bacilli in the peritoneal cavity. In the case of dogs it 

 was found that the cultivation of tubercle bacilli in vivo for a period of 1 to 10 

 months did not increase the resisting power of the dogs toward inoculation 

 with human tubercle bacilli. 



Vaccination ag-ainst tuberculosis, E. Leclainche {Rrr. Geii. Med. Vet., 

 10 (1!)01). No. 119, pp. .'}S5-5!ll). — The author reviews in a critical manner 

 the results obtained by other investigators and himself in testing the efficacy 

 and practicability of von liehring's method of vaccination ag.ninst tuberculosis, 

 and concludes that at the jtresent time the only reliable and well established 

 methods for controlling tuberculosis are the systems of isolation recommended 

 by Bang and Ostertag. 



Tuberculosis tests for 1906-7, II. L. Kussell {Wiscoit.sin Hta. Rpt. 1901, 

 Pit. 22'i-230). — A systematic effort is being put forth by the station to popu- 

 larize and extend as widely ::s possible the aitplication of the tuberculin test 

 to dairy herds as a basis for the control of tuberculosis. The number of ani- 

 mals tested is increasing ra])idly from year to year. Statistics are given show- 

 ing the number of herds and number of animals tested from 1!>01 to 1007. In 

 1tM)l the number of cows tested was 425 and in 1907, 10,740. The percentage of 

 tulierculous animals as shown by these tests varied from 2.7 to 19.7. The 

 distribution of tuberculosis is shown by counties and also by regions in the 

 State. The greatest prevalence of the disease is observed in the older dairy 

 regions. 



The extent to which the milk yield is affected by subcutaneous injections 

 of tuberculin, E. Rohm {Srensk }(t. Tid.^kr.. 12 {1901), No. 6. pp. 2'i1-2'iS).— 

 In the experiments reported in this paper it was found that the milk yield may 

 be considerably lessened as a result of tuberculin injections. With reacting 

 cows the falling off in the milk flow appears within 2 or 3 days after injection 

 and a return to the normal milk yield usually occurs within 1 week. In non- 

 reacting cows there is no diminution in the milk yield, but, on the other hand, 

 there may be a slight temporary increase. 



Two new species of nematodes in the alimentary tract of cattle in Sumatra, 

 A. Vryburg (Cenihl. Bali, [ei(■.^, 1. Aht., Orig., J,5 (1901), No. ',, pp. 321-332. 

 ids. ,')). — An account is presented of the appearance, life history, and habits of 

 HtrotKjyloidea hovis and Ayrioistomum vnjburyi. Either of these parasites may 



