PLATE XIX. 



Bacillus tuberculosis. 

 FIG. i. 



From a section of the liver of a tubercular hen. 

 With a moderate power the areas of caseation 

 and the topographical distribution of the bacilli 

 can be studied. Stained with the Ehrlich-Koch 

 method (methyl violet and bismarck brown), x 

 400. 



FIG. 2. 



From the same preparation with high amplification, 

 showing that the parts stained blue consist 

 entirely of bacilli, x 1,500. 



