88 MORPHOLOGY OF THE BACTERIA. 



which, when set free, give birth to other rods 

 of Bacillus (Cohn). 



B. anthracis, Cohn (Bacteridie charbonneuse, Da- 

 vaine). 



Species very similiar to the preceding, generally 

 longer and always motionless ; length 4 to 12 and 

 even 50 p, thickness, scarcely appreciable, 0.8 to 

 14 jx (Bollinger). 



The B. anthracis is developed in charbon 

 (malignant pustule of man, sang de rate of 

 sheep, maladie de sang of cattle, fievre charbon- 

 neuse of horses), and in the rabbit, the rat, etc. ; 

 never in the dog, the cat, the birds, and cold- 

 blooded animals. It is found above all in the 

 capillary vessels. Cultivated in suitable media, 

 such as the aqueous humor of the eye of the 

 ox, the Bacillus of anthrax develops spores in 

 the interior of its filaments, which may germin- 

 ate and reproduce rods (Koch). 



According to recent observations not yet 

 published, by cultivating the B. Anthracis in 

 the blood of the dog, a development of veritable 

 sporangia may be obtained, containing from 

 three to six spores (Toussaint). 



B. amylobacter, Van Tieghem (Amylobacter, TJro- 

 cephalum and Clostridium Tre"cul). 



B. occurring, like the preceding, under various 

 forms, — in pointed cylindrical filaments of 6.6 to 

 26 /a in length and 1.1 //, in thickness, or in form of 

 tadpole, with a spore in the terminal swelling, or of 

 a spindle, with a spore in the middle. In fact, it 

 does not differ from B. subtilis, except by the appear- 



