294 



BOARD OF AGRICULTURE. 



Sample. Phos. Acid. Potash. Nitrogen. 



A .91 .69 1.10 



B 1.29 1.02 1.47 



From these percentages I have calcul.ited the pounds of each of these 

 valuable ingredients in a barrel of each kind of manure, wet and dry; 

 and also tlie commercial value of these quantities in forms equally useful 

 to the farmer. 



Sample Phos. Acid. Potaeh. Nitrogen. Value per Barrel. 



A 1.8 lbs. 1.38 lbs. 2.2 lbs. $0.65 



B 2.25 ** 1.78 " 2.58 « 0.78 



The phosphoric acid is reckoned at 8 cents per pound, the potash at 5 

 cents, and the nitrogen at 20 cents. You cannot get something out of 

 nothing, so you cannot expect that the manure of hens will contain 

 more fertilizing material than is furnished by their food." 



Relative Manure Value of Cotton-Seed Meal and Linseed 



Meal. 



The maniirial value of purchased cattle foods is a matter of im- 

 portance. This value is determined by the amounts of nitrogen, 

 phosphoric acid and potash that the foods contain, as these ingredi- 

 ents appear in the manure in proportion to the quantities found in 

 the food. 



As a source of plant food cotton-seed meal is superior to linseed. 



Analyses of two samples of each of these foods collected in Maine 

 in the fall of 1886 showed them to contain the following quantities 

 of nitrogen, phosphoric acid and potash : 



The cost in 1887 of the same quantities of equally valuable nitro- 

 gen, phosphoric acid and potash that are found in the above average 

 for cotton-seed meal was $31.31, while the market value of these in- 

 gredients in the average linseed meal was only $22.12. 



