94 GENERAL BACTERIOLOGY 



EXERCISE 58. PREPARATION OF SPECIAL MEDIA. 

 Tube and sterilize the following media for work in Chapters IV, 

 and V. : 



80 tubes of ordinary or nutrient agar. 



2 tubes of lactose agar. 

 10 tubes of dextrose agar or gelatin. 

 20 tubes of gelatin. 

 10 tubes of bouillon. 



10 fermentation tubes of dextrose bouillon. 

 10 tubes of potato. 

 10 tubes of milk. 



10 tubes of sugar-free bouillon, or Dunham 's solution, 

 10 water-blanks. 



