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. 
