112 MANURES. 



increasing in size, because the fat is taken from 

 those parts of the food which are obtained by plants 

 fnun the atmosphere, and from water (i.e. from the 

 substances containing no nitrogen). Fat contains 

 no nitrogen, and, consequently, does not lessen the 

 amount of this ingredient in the manure. 



Milch Cows use a part of their food for the forma- 

 tion of milk, and consequently they produce manure 

 of reduced value. 



The solid manure of the horse is better than that 

 of the ox, while the liquid manure of the ox is com- 

 paratively better than that of the horse. The cause ofs 

 this is, that the horse has less perfect digestive organs 

 than the ox, and consequently passes more of the 

 valuable parts of his food, in an undigested form, as 

 dung ; while the ox, from chewing the cud and hav- 

 ing more perfect digestion, turns more of his food in- 

 to urine than does the horse. 



RECAPITULATION. 



FULL GROWN animals not 1 



producing milk, and 



f 11 i ,. , > make the best manure. 



lull grown animals fat- I 



tenmg 

 THE GROWING OF ANIMALS reduces the value of their 



manure, portions of their food being taken to form 



their bodies. 

 MILCH Cows reduce the value of their manure by 



changing a part of their food into milk. 



