DISEASES OF CATTLE. (55 



lobular tissue. The smaller tubercles were more transparent, and 

 bad a grayish color, having a firm organic character ; in the center 

 of one of the larger ones was to be seen caseous material. The 

 bronchial lymph-glands were much enlarged ; inwardly disturbed 

 by many purulent and caseous centers ; here and there lime-salts 

 'were perce])tible ; tlie tuberculous centers extended prominently 

 above the cut surface of the gland. The mesenteric and other 

 glands presented a similar character. 



The microscopical examinations of the tubercles gave the same 

 characteristics as those of man. 



Some of the experiments Avith the other animals mentioned 

 previously gave negative, wliile othere were followed by positive, re- 

 sults. 



These and other more recent experiments prove that the milk 

 from cows complicated lo'ith tuberculosis is not only ]iarmful, hut 

 that it also contains elements of a specifically dangerous cTiaracter / 

 it is capahle of generating elements of a similar character : it there- 

 fore hears the character termed infectious. 



Wliile I will not go so far as to consider the above-noticed and 

 other experiments as conclusive and unquestionable evidence that 

 the milk from tuberculous cows (and why not human mothers ?) will 

 at all times produce tuberculosis in young animals fed on the same, 

 yet, such is my confidence in the value of the experiments made 

 by Gerlach and still later by others, that for myself I have no 

 doubt whatever that the milh from tuberculous coios and mothers 

 will, in the greater numher of cases, generate tubercles in young ani- 

 mals when fed with sufficient quantities, and for a sufficient length 

 of time, to produce infection. 



The casual reader might perhaps fail to see the point to which 

 these conclusions necessarily lead us, viz., that if young animaU 

 can be thiis infected, what is there to prevent the same taking place 

 in babes brought up on the bottU ? I do not wish to place myself 

 before the public as a visionary alarmist. 



Here are facts, however, induced from carefully executed ex- 

 periments, and by a man noted for his exactness and trustworthiness 

 in other branches of researches. 



Bollinger has summed up the feeding experiments upon young 

 animals, with the milk in question, as follows: 



'• Three pigs — one successfully, two doubtful. 



" Three calves — two successfully, one prematurely died. 



" One lamb — one successfully. 



" Two dogs — two negative results. 



