BACTERIUM ANTHRACIS 93 



EXERCISE XLV 



BACTERIUM (BACILLUS) ANTHRACIS 



142. Work for this Exercise. — Examine and describe each 

 of the cultures of this organism made during the last exercise. 



Examine microscopically the bouillon and agar cultures in 

 both hanging-drop and stained cover-glass preparations. Stain 

 a preparation with each of the 3 ordinary staining solutions 

 heretofore used. 



Measure a few of the bacteria in a stained preparation and 

 make a drawing of them magnified 1000 diameters. 



Make a series of 3 agar plates from the bouillon culture. 



Examine sections of animal tissue containing anthrax bac- 

 teria. Make and examine a few cover-glass preparations from 

 the liver of an animal (guinea pig or rabbit) which has just 

 died of anthrax. (This will be furnished by the instructor.) 



