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VII. TYPHOID AND COLON BACILLI. 
Fic. 78.—Bacillus typhosus, from a twenty-four hour agar 
culture; x 650 (Heim). 
Fic. 79.—Bacillus coli, from an agar culture; x 1000 
(Itzerott and Niemann). 
1. Study the morphology and biology of cultures 
