Organic nitrogen in fine ground bone, 17 



" " " medium bone, 15 



" " in medium bone, 13 



" " in coarse medium bone, • 11 



" " in coarse bone, horn shavings, hair and 



fish scraps, 9 



Phosphoric acid soluble in water, 8 



" " " ammonia citrate,* 7|- 



" " insoluble, in drj' fine ground fish, and in 



fine bone, 7 



Phosphoric acid insoluble in fine medium bone, 6 



" " " in medium bone, 5 



" " " in coarse medium bone, 4 



" " " in coarse bone, 3 



" "• "■ in fine ground rock phosphate, 2 



Potash as high grade sulphate, 5^ 



" " Kaiuite, 4 J 



" " Muriate, 4|- 



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

 respective ingredients could be bought at retail for cash per pound in 

 our leading markets in the raio 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 reasonable retail price in case of standard raw materials such as : 

 Sulphate of Ammonia, Dry Ground Fish, 



Nitrate of Soda, Castor Pomace, 



Muriate of Potash, Cotton Seed, 



Sulphate of Potash, Bone, 



Dried Blood, Azotin, 



Plain Superphosphates. 



TRADE VALUES IN SUPERPHOSPHATES, SPECIAL 



MANURES AND MIXED FERTILIZERS OF 



HIGH GRADE. 



The organic nitrogen in these classes of goods will be valued at 

 the highest figure laid down in the Trade Values of Fertilizing Ingre- 

 dients in Raw Materials, namely seventeen cents per pound, it being 



*Dissolve(l 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 

 agitation oncH in five minutes; commonly called "reverted" or "backgone " 

 phosphoric acid. 



