STUDY AND IDENTIFICATION OF BACTERIA. 



At times we only get the cholera red when we have a pure 

 culture of cholera. 



4. Smear a fleck of mucus or, better, the surface growth on 

 peptone, on a dry agar surface in a Petri dish. From 

 colonies developing, make agglutination and, if desired, 

 cultural tests. It is by immune reactions that we identify 

 cholera spirilla. The surface moisture of plates is best 



dried by the filter-paper top. 



5. For methods with water, see Water Analysis. 



