BACILLUS CHOLERA SUIS 79 



EXERCISE XXXVI 



BACILLUS CHOLERA SUIS AND BACILLUS TYPHOSUS 

 {Continued) 



124. Work for this Exercise — Reexamine and complete the 

 notes on all of the cultures except the milk and litmus milk, 

 which should be kept for 3 weeks longer. Carefully observe 

 the reaction of all the liquid cultures. 



Stain the flagella on the bacteria from the agar cultures 

 (82). 



Compare the colonies on the gelatin plates with those of 

 £. coli communis. 



Make a careful comparison, in tabulated form, of the mor- 

 phology, including measurements, of the bacilli themselves, and 

 of the appearance of the growth in the different cultures of 

 B. coli communis and the bacilli of hog cholera and typhoid 

 fever. 



The cultures, excepting those in milk, can be rejected now, or, 

 if desired, they may be kept for further study and comparison. 



