New York Agricultural Experiment Station. 97 



Average Composition of Chemicals and Incomplete Febtilizebs. 



Per cent guaranteed. Per cent found. £■« I 



. ^___^ .A. O L. 



' -~» * » <D<M ^ 



Low- High- Aver- Low- High- Aver- g -g g « 



est. est. age. est. est. age Juflc 



^ O CO TO 

 <1 



Nitrogen in 



Nitrate of soda 14. 7G 15.50 15.16 14.80 15.61 15.42 0.20 



Sulphate of animo- 



nia 20 20.34 0.34 



Dissolve phosphates 



Phosphoric acid 



Available 10 30 13.50 11.05 33.27 14.36 0.80 



Water-soluble 0.37 15.55 9.30 



Insoluble 0.16 3.81 1.38 



Potash in 



Kainit 12.40 12.40 12.40 11.94 17.36 12.75 0.35 



Muriate 50 50.40 50.20 49.74 50.20 50 



Sulphate 22.50 20.60 



Fish scrap 



Nitrogen 5 8.50 7.17 5.35 9 T.68 0.51 



• Phosphoric acid 4 6 5.34 3.84 7.23 5.20 



Bone meal 



Nitrogen 1 4 2.50 1.05 4.77 2.95 0.45 



Phosphoric acid.... 9 26.67 19.10 10.93 28.83 21.32 2.22 



Mixture containing 



Phosphoric acid .... 



Available 8 13 10 7.46 13.46 10.80 0.80 



Insoluble 0.21 9.50 2.67 



Potash 1 10 3.60 0.84 9.85 3.72 0.12 



TRADE-VALUES OF PLANT-FOOD ELEMENTS IN RAW MATERIALS AND 



CHEMICALS. 



The trade-values in the following schedule have been agreed 



upon by the Experiment Stations of Massachusetts, Rhode Island, 



Connecticut, New York, New Jersey and Vermont, as a result of 



study of the prices actually prevailing in the large markets of 



these states. 



7 



