Tee ol 1S 5a aye le tthe ae *) 7 oe SY See? egos ina 0 
SE SN: lia ta 
‘ y ; iP 
ve Lhe WU cae e hs 
Sa oe recs 
Si a . ee tre ie ail oe 
. e ; 2 
New York AGRICULTURAL EXPERIMENT SraTION. 409 
XXUI. METHOD OF MAKING COMMERCIAL VALUA- 
TIONS OF FERTILIZERS. 
Prices oF NITROGEN, PaospHoric ActD AND PorasH. 
The following schedule of trade values is the one to be used in 
calculating the commercial value of fertilizers during the years of 
1890 and 1891: 
Trade-values of fertilizing ingredients in raw materials and chemicals, 
adopted by Experiment Station. 
1890. 1891. 
Cts. per Cts. per 
pound. pound. 
mRLOPON AN. AMMONIA SAltGye dsc... . is... .cosderaneel 17 18} 
Maremerin nitrates...) sass oS. v1)... cee 144. 14} 
Organic nitrogen in dry and fine ground fish, meat and 
BLOOG. sho.) Some DOPE aa ca-e gio le ele ahkiy\a'd «a's. «+ ohare 1 15} 
Organic nitrogen in cotton-seed meal and castor-pomace, 15 15 
Organic nitrogen in fine ground bone and tankage..... 164 15 
Organic nitrogen in fine ground medium bone and 
Urs INA Sakae gala Aru le wee 4s ci ah 6 o's eine eiptenyh lines 18 12 
Organic nitrogen in medium bone and tankage ........ 104 93 
Organic nitrogen in coarse bone and tankage.......... 8i 14 
Organic nitrogen in hair, horn shavings and coarse fish 
OMAR oi tctergs Sie ote WII AS UTS sale laseoctalstels' cis slw sa ties 8 7 
Phosphoric acid, soluble in water.... ................ 8 8 
Phosphoric acid, soluble in ammonium citrate ......... 74 (es 
Phosphoric acid in dry ground fish, fish-bone and tankage, 7 7 
Phosphoric acid in fine medium bone and tankage ..... 6 54 
Phosphoric acid in medium bone and tankage......... 5 4} 
Phosphoric acid in coarse bone and tankage....... Brean ie 
Phosphoric acid in fine ground rock phosphate ........ PL Naar 
Potash as high-grade sulphate, in forms free from muri- 
ates (chlorides), in ashes, etc. ..........ec eee e cece 6 54 
GALT RAVINE LB criela dies sielatd +\< clerp Wie Main Giese, o's a's 44 4}, 
Potash in muriate................-... 1) SS eae 4} 4} 
Organic nitrogen in mixed fertilizers ............... ae 15} 
- Insoluble phosphoric acid in mixed fertilizers.......... 2 2 
The trade-values in the foregoing schedule represent the 
average prices at which, in the six months preceding March, the 
respective ingredients, in the form of unmixed raw materials, 
52 : 

