158 SOILS AND FERTILIZERS 



FARM No. i. (Continued}. 



Loss by Reaching. 



125 X 0.30 = 37.50 Ibs. nitrogen 

 90 X 0.25 = 22.50 Ibs. phosphoric acid 

 200 X 0-25 = 50 Ibs. potash 



Total loss. 



Lbs. Per cent. 



Nitrogen 162.5 65 



Phosphoric acid 22.5 25 



Potash 250.0 62 



Present in final product, 

 manure from i ton timothy. 

 Lbs. 



Nitrogen 8.75 



Phosphoric acid 6.75 



Potash 15.00 



Relative money value $1.00 



FARM No. 2. 



In 10 tons mixed feed. 

 Lbs. 



Nitrogen 400 



Phosphoric acid 240 



Potash 300 



LOSS, sold in milk and retained in body. 

 Lbs. Per cent. 



Nitrogen 400 X - 2 80 20 



Phosphoric acid, estimated... 10 4 



Potash 12 4 



Present in final product, 



manure from i ton feed. 



Lbs. 



Nitrogen 32.0 



Phosphoric acid 23.0 



Potash 26.0 



Relative money value $3-8o 



201. Summary of Ways in which Stable Manure 

 May Be Beneficial. Farm manures act upon soils 

 both chemically and physically : 

 (a) Chemically : 



i. By adding new stores of plant food to the soil. 



