organic nitrogen in fine ground bone and tankage. 16 



•' •' '' medium bone, "^ 14 



'' " in medium bone, '' 12 



"• "-in coarse medium bone, •' 10 



" ''in coarse bone, horn shavings, hair and 



fish scraps, >< 



Phosphoric acid soluble in water, 8 



" '• •' ammonia citrate, "^ 7| 



" " insoluble, in dry fine ground fish, in 



fine bone, tankage 7 



Phosphoric acid insoluble in fine medium bone and tankage, (5 

 " " " in medium bone, '"• 5 



" " " in coarse medium bone, '• 4 



" '• '• in coarse bone, •' 3 



" " '• in fine ground rock phosphate. 2 



Potash as sulphate in compounds free from chlorine, 6^ 



" Kainite, 4i 



" Muriate, 4^ 



The above trade values are the figures at which on March 1st, the 

 respective ingredients could be bought at retail /or cash per pouud in 

 our leading markets in the raw materials, which are the regular 

 source of supply. 



They also correspond to the average wholesale prices for the six 

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

 which we have wholesale quotations. The calculated values obtained 

 by the use of the above figures will be found to agree fairly with the 

 reasoji.able retail price in case of standard raw material such as : 

 Sulphate of Ammonia, Dry Ground Fish, 



Nitrate of Soda, Azotiu, 



Muriate of Potash, Ammonite, 



Sulphate of Potash, Castor Pomace, 



Dried Blood, Bone, 



Dried Ground Meat, Plain Superphosphates. 



♦Dissolved from two grams of Phosphate unground, by 100 C. C neutral 

 solution of ammonium citrate, sp. gr. 1.09 in 30 minutes at 65 deg. C, with agita- 

 tion once in Ave ninutes; commonly called "reverted" or " backgone " phosphoric 

 acid. 



