IDENTIFYING BACTERIA FROM CULTURES IO7 



EXERCISE XLVI 



IDENTIFYING BACTERIA FROM CULTURES 



156. The two cultures of bacteria assigned for identification 

 belong to species already studied, and the student should 

 identify the species of bacteria in them. To do this such 

 media should be inoculated and such microscopic examina- 

 tions made as he thinks necessary. The notes should contain 

 a complete record of the work and the reasons for the identi- 

 fications made. This exercise affords a good opportunity to 

 begin the use of manuals and text-books in identifying species. 



157. Work for this exercise. Identify the bacteria in the 

 cultures assigned at the last exercise. Use any method which 

 seems to be necessary. In the laboratory notes give reasons 

 for the procedure adopted. 



Reexamine and reject the cultures of Bad. diphtheriie. 



