882 EXPEEIMENT STATION RECORD. 



Trypanosoma americanum, F. M. Johns {'New Orleans Med. and Surg. 

 Jour., 66 {1014), No. 7, pp. 533, 534; abs. in Amer. Jour. Trop. Diseases and 

 Pr^. Med., 1 {1914), No. 8, p. 594). — This paper reports upon a biological study 

 made of this nonpathogenic parasite of cattle. 



Contribution to a study in regard to the relation of human tuberculosis 

 to bovine tuberculosis, D. G. Izcara {Off. Internat. Hyg. Put). [P.aris], Bui. 

 Mens., 5 {1913), No. 8, pp. 1337-1343) .—Following a review of the literature in 

 regard to the relation of bovine tuberculosis to tuberculosis in man, some feed- 

 ing tests with guinea pigs are reported. In some instances the animals received 

 the meat of tubercular animals and in other cases the meat juice. 



Only the meat of animals affected with miliary or acute generalized tuber- 

 culosis produced tuberculosis in the guinea pigs; localized cases did not. The 

 statistics relating to the occurrence of bovine and human tuberculosis in Spain 

 are discussed. 



Guinea pigs were also fed raw milk obtained from the open market. The six 

 which received the milk as purchased remained sound, while the six which 

 were given the lower portion of the centrifuged milk became tuberculous. In 

 another group of guinea pigs in which the milks were administered by the 

 intraperitoneal route, only two of the six receiving the milk as purchased 

 became tuberculous, whereas of the six which received the lower portion of 

 the centrifuged milk four became tuberculous. A third group of animals 

 reecived hypodermic injections of the milks. Only one of the six receiving the 

 milk as purchased became tubercular, whereas two out of the six given the lower 

 centrifuged portion became diseased. The statistics in Spain relating to the 

 causation of tuberculosis by the consumption of milk from tuberculous cows 

 are also discussed. 



About atypical tuberculosis in slaughtered animals, Hatemann and 

 Binder {Ztschr. FleiscJi u. Milclilujg., 23 {1912), No. 6, pp. 124-131, figs. ^; 

 ZS {1913), No. 7, pp. 153-156, fig. 1; al)S. in CentU. BaU. \.etc.^, 1. Alt., Bef., 

 56 {1913), No. 20, p. 620).— Tests made with 4 calves, 1 adult bovine, and a 

 pig brought out the fact that in the lymphatic glands undergoing rayed casea- 

 tion, as jQrst described by Bongert, tubercle bacilli are often present. In the 

 lymphatic glands accompanying this rayed caseation there occur peculiar, 

 macroscopically visible changes which are seldom observed in tuberculous pigs. 

 The changes are observed most often in the periphery of the cell, but also 

 appear on the walls of the gland in the cut preparation, or they may appear a 

 little inwardly as a light gray wreath containing small punctate bodies. When 

 such lymph glands are observed, the presence of tuberculosis is rarely sus- 

 pected by the inspector, but it is not a difficult matter to detect the tubercle 

 bacilli in these glands with the antiformin method. This atypical form of 

 tuberculosis has some characteristics which are similar to those atypical cases 

 which have been described in man by Liebermeister. 



[About atypical tuberculosis in slaughtered animals], Hafemann and 

 Binder {Ztschr. FleiscU u. Milclilujg., 23 {1913), No. 23, pp. 531, 532).— A con- 

 tinuation of the work noted above. It is pointed out that the pathologic condi- 

 tion is noted but seldom in the Ij^mphatic glands of the cow's udder. The 

 histological findings showed a connective tissue proliferation. Investigations 

 were conducted for the purpose of determining the cause of this connective 

 tissue proliferation. In the literature of human medicine similar findings are 

 recorded. 



The authors noted the presence of tubercle bacilli in seven cases and the 

 conclusion is reached that the process is of a tuberculous nature. It is, however, 

 pointed out that virulent tubercle bacilli are seldom present in the lymphatic 

 glands of either pigs or cows which show the pathologic changes under discussion. 



