MANURES, THEIR KINDS AND USES. 29 



scraps of leather and woolen cloth and waste feathers 

 will heat; but they also should go into the compost -heap. 



In the application of manure, the kind of crop, previ- 

 ous fertility of the soil and the quality of the manure 

 will govern the quantity. 



The amount and manurial value of the excrement void- 

 ed by an animal depends upon the quality of its feed. The 

 manurial value of hulled cotton-seed meal is more than 

 twelve times that of wheat-straw, three times that of 

 clover-hay, twice that of wheat-bran, ten times that of 

 mangel wurzel, and thirty times that of common turnips. 

 Of all vegetable substances used as cattle feed, hulled 

 cotton-seed meal is the richest in nitrogen, phosphoric 

 acid and potash, the most essential requisites in the 

 growth of plants, and these will appear again most abun- 

 dantly in the dung. The money value of the manure 

 from different articles of food according to calculations 

 of Sir J. B. Lawes, based upon the value of nitrogen, 

 phosphoric acid and potash in leading commercial fertil- 

 izers, are: 



VALUE OF A TON OF MANUKE FROM DIFFKRENT KltfDS OF FOOD. 



Per ton. 



Cotton-seed meal $27.86 



Linseed cake 19.72 



Beans 15.73 



Wheat-bran 14.59 



Clover-bay 9.64 



Indian meal 6.63 



Oat-straw 2.90 



Turnips 0.80 



Block estimated that a horse fed on one hundred pounds 

 of hay will void one hundred and seventy-two pounds of 

 fresh dung; one hundred pounds of oats gave two hun- 

 dred and four pounds; and one hundred pounds of grass 

 gave forty-three pounds of dung. A horse furnishes, if 

 well fed, about twelve thousand pounds of solid dung 

 and three thousand pounds of urine annually. The ma- 

 nure from the street-car stables in New York was found 



