TEADE VALUES OF PLANT FOODS. 69 



basis of compilation. The valuations given in this 

 work are based upon the prices found in the follow- 

 ing table, viz.: 



SCHEDULE OF TRADE VALUES FOR 1891: 



Per lb. 

 Nitrogen in Ammonia Salts, - . _ . Ig^c. 



'• '* Nitrates, - . . . . i4|c. 



Organic Nitrogen in dried and fine ground fish, meat and blood, 15^0. 



" " " castor pomace and cotton-seed meal, - 15c. 



" " " fine ground bone and tankage, - 15c. 



" " *• fine-medium bone and tankage, - 12c. 



" " medium bone and tankage, - - 9ic. 



" " " coarser bone and tankage - - 7ic. 



" " " horn shavings, hair and coarse fish scrap, 7c. 



Phosphoric Acid, soluble in water, - - - - 8c. 



" " ammonia citrate,* - 8c. 



insoluble in dry ground fish, fine bone and t'k'ge,7c. 



" " fine-medium bone and tankage, 5^c. 



" " medium bone and tankage, 4^c. 



" " coarser bone and tankage, 3c. 



* * "in fine ground rock phosphate, 2c. 



Potash as High-Grade Sulphate, and informs free from Muriates 



(or Chlorides), _ . . - 5^0. 



asKainit, ------ 4ic. 



as Muriate, - - - - - . 4ic. 



* 1}4 cents for Massachusetts, Connecticut and Pennsylvania. 



