Contents xvii 



CHAPTER XXXI 



Pages 



Cellulose Fermentation ... . . .342-347 



Gases in the manure pile. Litter and the development 

 of bacteria in manure. 



CHAPTER XXXII 



The Conservation op Manurial Constituents . . . .348-356 

 Chemical methods — Gypsum — Burned lime, shell-lime, 

 and limestone — Superphosphate — Kainit — Sulfuric acid 

 — Value of chemical methods. Mechanical methods — 

 Effect of moisture — The temperature of the manure — 

 Preventing the loss of ammonia. 



PART VI 



Bacteria in Milk and Related Products . 367-430 



CHAPTER XXXIII • 

 Milk as a Food ... . . .357-359 



Milk a medium for bacterial development. 



CHAPTER XXXIV 



Source of Bacteria in Milk .360-368 



Bacteria in the udder — Bacteria in the air — Bacteria on 

 the cow's body — The milker — The utensils — Milking- 

 machines — Milk-strainer. 



CHAPTER XXXV 



Kinds of Bacteria in Milk . . . .369-377 



Species of bacteria in milk — Lactic-acid bacteria — Sweet 

 curdling — ^Harmless bacter-a — Milk faults — Blue milk — 

 Red milk — Bitter milk — Ropy milk. 



CHAPTER XXXVI 



Milk Beverages . .378-381 



Kefir — Kumiss — Matzoon. 



