124 MICRO-ORGANISMS AND DISEASE. [CHAP. 



The other equally important part of Koch's discovery, 

 namely, the artificial cultivation of the tubercle-bacilli and 

 the production with them of tuberculosis, has also been 

 verified by Weichselbaum. 1 Weichselbaum also ascertained 2 

 that in acute miliary tuberculosis of man the blood contains 

 the bacilli. 



An important series of observations was published by 

 Mr. Watson Cheyne in the Practitioner for April 1883, in 

 which he proved, (1) That the organs of rabbits and guinea- 



Fia. 86. FROM A SECTION THROUGH A TUBERCLE OF THE LUNG FROM A 

 CASE OF ACUTE MILIARY TUBERCULOSIS IN A CHILD. 



Several alveoli are seen filled with debris ; in the centre of this are numerous 

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



pigs suffering from the tuberculosis induced by Toussaint's 

 cultivations from the blood of tuberculous animals, which 

 cultivations Toussaint considered to be those of micrococci, 

 turned out, on careful microscopic examination and suitable 

 staining, to contain the typical tubercle-bacilli ; (2) That 

 inoculations with cultures of Toussaint's pure micrococci not 

 containing any tubercle-bacilli did not produce tuberculosis in 

 animals ; (3) That Koch's assertions as regards the constant 

 occurrence of the tubercle-bacilli in the tubercles of animals 



Wiener med. Blatter, 1SS3. 



Hid. 10, 1S84. 



