" " " coarser bone and tankage, 8^ 



" " " hair, horn-shavings and coarse fish 



scrap, 8 



Phosphoric acid soluble in water, 8 



" " soluble in ammonium citrate,* 7| 



" " in dry ground fish, fine bone and tankage, 7 



" "in fine medium bone and tankage, 6 



" "in medium bone and tankage, 5 



" "in coarser bone and tankage, 4 



" "in fine ground rock phosphate, 2 



Potash as High Grade Sulphate, and in forms free from 



Muriate or Chlorides, 5i 



" " Kainite, 4i 



" " Muriate, 4^ 



The above trade values are the figures at which in the six months 

 preceding March the respective ingredients could be bought at retail 

 for cash in our large markets, in the raw materials which are the reg- 

 ular source of supply. 



They also correspond to the average wholesale prices for the six 

 months ending March 1st plus about 20 per cent, in case of goods 

 for which we have wholesale quotations. The valuations obtained 

 by use of the above figures will be found to agree fairh' with the rea- 

 sonable retail price at the large markets of standard raw materials 

 such as : 



Sulphate of Ammonia, Dry Ground Fish, 



Nitrate of Soda, Azotin, 



Muriate of Potash, Ammonite, 



Sulphate of Potash, Castor Pomace, 



Dried Blood, Bone and Tankage, 



Dried Ground Meat, Plain Superphosphates, 



To obtain the Valuation of a Fertilizer (i. e. the money-worth of 

 its fertilizing ingredients,) we multiply the pounds per ton of Nitro- 

 gen, etc., by the trade-value per pound. We thus get the values per 

 ton of the several ingredients, and adding them together we obtain 

 the total valuation per ton in case of cash payment at points of gen- 

 eral distribution. 



The mechanical condition of any fertilizing material, simple or 

 compound, deserves the most serious consideration of farmers, when 



*Dissolved from two grams of Phosphate unground, by 100 C. C. neutral solution of am- 

 monium citrate, sp. gr. 1.09 in 30 minutes at G5 deg. C, with agitation once in five minutes; 

 commonly called " reverted " or " backgonc" phosphoric acid. 



