CHAPTER V 



CULTIVATION OF BACTERIA 



In order to properly study bacteria it is absolutely 

 essential that they be grown by themselves, i. e., not 







m 







Fig. 8.— Media in tubes: a, Broth; 6, agar slant; c, potato (Hiss and 



Zinsser) . 



mixed with a lot of other bacteria. In other words, it 

 is necessary to obtain a pure culture. We shall assume 



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