234: Report of the Chemist of the 



Am^BAGE COMrOSITION OF COMrLETE FERTILIZERS COLLECTED. 



73 



Per ct. guaranteed. Per ct. found. g 



p 

 — > o 



^s 



1899 



a; « S a- <s « ? 



1-1 tq <) ij a ■< ■< 



Spring: "^ .,1 



Nitrogen 0.39 8.25 1.89 0.37 8.50 2.04 0.15 



Available phosphoric acid .. . 1.93 14.00 7.78 1.20 15.12 8.76 0.98 



Insoluble phosphoric acid 0. 13 10.80 2.22 



Potash 0.75 15.00 4.56 0.43 12.95 4.86 0.30 



Water -soluble phosphoric 



acid 0.00 4.43 5.40 



Water-soluble nitrogen 0.00 10.28 0.80 



Fall: 



Nitrogen 0.41 4.95 1.52 0.59 4.91 1.65 0.13 



Available phosphoric acid .. . 3.55 11.00 8.30 3.44 13.08 9.04 0.74 



Insoluble phosphoric acid . 63 9 . 64 2 . 24 .... 



Potash 1.00 10.00 4.08 0.48 10.75 4.30 0.22 



Water -soluble phosphoric 



acid 0.40 10.80 6.07 



Water-soluble nitrogen 0.03 4.79 0.02 



Average for year: 



Nitrogen 1.83 1.97 0.14 



Available phosphoric acid 7 . 87 8 . 80 . 93 



Insoluble phosphoric acid 2.23 .... 



Potash 4.48 4.76 0.28 



Water -soluble phosphoric 



acid 5 . 55 .... 



Water-soluble nitrogen 0.75 .... 



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, ISTew Jersey and Vermont, as a result of 

 study of the prices actually prevailing in the large markets of 

 these states. 



These trade-values represent, as nearly as can be estimated, the 

 average prices at which, during the six months preceding March, 

 the respective ingredients, in the form of unmixed raw materials. 



