THE ANTHRAX BACILLUS. 197 



treated according to the method of contrast-staining 

 described on p. 114; the effect is especially distinct, 

 if the spores are stained with aniline water solution of 

 fuchsine and the threads slightly with methylene blue, 

 (cf. Fig. 4, Plate I.). In sections it will be seen that 

 the bacilli occur in the blood capillaries, which are 

 often completely blocked by them. The liver, spleen, 

 and kidneys are especially infested, and in them large 

 numbers are always to be found. 



In all these experiments with the anthrax bacillus, 

 and indeed with all pathogenic bacteria, it is neces- 

 sary to take the very greatest care to avoid engen- 

 dering the disease in oneself or in others. 



