CHAPTER IV. 



SYSTEMATIC STUDY OF REPRESENTATIVE NON-PATHOGENIC 



BACTERIA. 



EXERCISE LVIII. PREPARATION OF SPECIAL MEDIA. 



Tube and sterilize the following media for work in Chapters IV and V: 

 80 tubes of plain agar. 



2 tubes of lactose agar. 

 20 tubes of gelatin. 



8 tubes of bouillon. 

 10 fermentation tubes of glucose bouillon. 



8 tubes of potato. 



8 tubes of milk. 



8 tubes of Dunham's solution. 

 10 water-blanks. 



