344 



MICRO-ORGANISMS AND DISEASE 



CHAP. 



The comparatively numerous cases of miliary tuberculosis 

 in children suggest the probability that they are due to the 

 consumption of cows' milk containing the tubercular virus 

 derived from a tubercular udder. Dr. Sims AVoodhead's 

 explanation that the numerous cases of tabes mesenterica 

 (tuberculosis of the intestines and mesenteric glands) of 



Fig. 135. — From a Section through a Tubercle of the Lung from a Case 

 OF Acute Miliary Tuderculosis in a Child. 



Several alveoli are seen filled with de'bris ; in the centre of this are numerous nuclei, 

 and amongst them the tubercle-bacilli. Magnifying power about 350. 



children are attributable to the consumption by these cliil- 

 dren of milk derived from the tubercular udder of the cow 

 seems a feasible one. 



Cohnheim and Salamonson were the first to show that in 

 all tubercular material there is present a specific virus. By 

 injecting a small particle of such matter into the anterior 

 chamber of the eye, they noticed that after the first result due 

 to the injury has passed off, the introduced particle gradually 



