New York Agricultural Experiment Station. 663 



Table XI. — Amount and Cost of Potash in Potassium Salts. 



COMPOSITION OF COMMERCIAL DRIED SHEEP MANURES AND COST OF 



PLANT-FOOD. 



Within a few years past, the sale of dried sheep manure has been 

 pushed vigorously and we obtained 9 samples for analysis. The 

 following figures give the essential points of interest. 



Table XII. — Amount and Cost of Nitrogen, Phosphoric Acid and 

 Potash in Dried Sheep Manures. 



Pounds of nitrogen in 100 pounds 



Pounds of phosphoric acid in 100 pounds 



Pounds of potash in 100 pounds 



Selling price of one ton 



Commercial valuation of one ton 



Cost of one pound of nitrogen 



Cost of one pound of phosphoric acid . . . 

 Cost of one pound of potash 



Highest. 



2.53 



2.61 



5.40 



$60.00 



12.13 



107 cents 



20 cents 



69 cents 



Lowest. 



1 

 

 1 



$24 

 10 

 43 cents 



8 cents 

 13 cents 



.99 

 .66 

 .21 

 .00 

 .25 



Average. 



2 23 

 1 56 

 2.31 



$37.17 



11 63 



69 cents 



1 cents 



16 cents 



An examination of these figures indicates that (1) The dried sheep 

 manures contain only small amounts of plant-food, averaging only 5 

 pounds in 100 pounds of material; (2) the selling price varies widely 

 without reference to composition; and (3) the cost of one pound of 

 nitrogen in these sheep manures is higher, much higher, than in any 



