252 Manual of Veterinary Microbiology. 



lute alcohol colored with methylene blue, and cleared 

 in oil of bergamot or turpentine. 



This solution is a combination of the two solutions, 

 staining and decolorizing, of Malassez and Vignal's 

 original process (see page 110). 



The bacterial elements are short, rounded or slightly 

 elongated, associated in chains or in small groups, or 

 more frequently in large groups or zoogloea. 



Zoogloeic tuberculosis is transmissible from guinea 

 pig to guinea pig by inoculation and gives rise to 

 generalized lesions like the tuberculosis of Koch; 

 but death supervenes at the end of six to ten days, 

 that is, much more rapidly than in the* case of the 

 latter. 



The authors were inclined to think from their first 

 observations that the zoogloea and the Koch bacillus 

 were the same micro-organism under two different 

 forms ; now, however, they must be regarded as ab- 

 solutely distinct germs. 



M. Nocard had the opportunity of studying an en- 

 zootic of zoogloeic tuberculosis in which all the 

 chickens of a farm succumbed to the disease. The 

 tubercles, in all cases, had their seat in the lungs, a 

 situation in which they are hardly ever seen in gen- 

 uine tuberculosis. Moreover, Koch's bacillus was 

 absent, whilst the zoogloeae were abundantly repre- 

 sented in the lesions. 



MM. ISTocard and Masselin produced zoogloeic 

 tuberculosis by inoculating the guinea pig with the 

 nasal discharge coming from a cow suspected of 

 phthisis, and which, at the autopsy, was found to be 

 exempt from this disease. The cocci found in the 



