MANURE. 205 



down from tne urine, as ammonia-phosphate of magnesia. 

 This is a valuable manure for potatoes. 



Each pint of human urine will produce a pound of wheat. 

 Each pound of ammonia is equal to a bushel of grain. 

 Whatever may be the food, it is evident from the above 

 statements, that rivers of riches run away from farms, from 

 want of attention to saving that which ordinarily is allowed 

 to be wasted. 



251. Each man evacuates, annually, enough salts to 

 manure an acre of land. Some form of geine only is to be 

 added to keep the land in heart, if the farmer has but the 

 heart to collect and use that which many allow, like the 

 flower unseen, " to waste its sweetness on the desert air." 



252. But with all the farmer's care, with every convenience 

 for collecting and preserving these animal products, still the 

 amount which can be so collected, is often wholly inadequate 

 to the wants of the farmer of small means. All these accu- 

 mulations presuppose a goodly stock of animals on the farm. 



This again is limited by the means of keeping, and so one 

 influences the other. The farmer wants some source of 

 manure, which while it produces the salts and geine of an 

 unlimited amount of stock, hogs and hens, shall yet require 

 no more barn-room, fodder or team, than every man who 

 means that his hands and lands shall shelter, feed, and clothe 

 him, can easily command. 



