■crude fertilizing chemicals and mixing as his soil and crops 

 require. 



Any farmer in this state may, if he will, purchase these 

 chemicals of the wholesale dealers or fertilizer manufacturers, 

 and he is then in position to adapt his fertilizers to the crops 

 and soil he is dealing with. 



A compilation of all our results thus far obtained gives us 

 the following table, in which one may see at a glance the rela- 

 tive profit resulting from the use of chemicals and the best 

 prepared fertilizers : 



On Hanover farm $r invested in prepared fertilizers gave increased crop, 

 valued at $i.8o. 



On Hanover farm ^i invested in chemical fertilizers gave increased crop, 

 valued at $2.80. 



On ten New Hampshire farms, cooperative test, $i invested in prepared 

 fertilizers, on corn, gave increased crop, valued at $0.74. 



On ten New Hampshire farms, cooperative test, $1 invested in chemical 

 fertilizers, on corn, gave increased crop, valued at $1.71. 



On ten New Hampshire farms, cooperative test, $1 invested in prepared 

 fertilizers, on sweet corn, gave increased crop, valued at $2.91. 



On ten New Hampshire farms, cooperative test, $1 invested in chemical 

 fertilizers, on sweet corn, gave increased crop, valued at $3.03. 



On ten New Hampshire farms, cooperative test, $1 invested in prepared 

 fertilizers, on potatoes, gave increased crop, valued at $2.07. 



On ten New Hampshire farms, cooperative test, $1 invested in chemical 

 fertilizers, on potatoes, gave increased crop, valued at $4.20. 



On ten New Hampshire farms, cooperative test, $1 invested in prepared 

 fertilizers, on potatoes, gave increased crop, valued at $4.20. 



On ten New Hampshire farms, cooperative test, $1 invested in chemical 

 fertilizers, on potatoes, gave increased crop, valued at $6.05. 



These results represent more than 500 individual tests, 

 and it cannot be that the results thus obtained are acci- 

 dental : they rest on some law, and from a study of the condi- 

 tions of the experiments we are brought to the conclusion that 

 the prepared goods are deficient in potash. The following 

 table shows the per cents, of nitrogen, phosphoric acid, and 

 potash in the combinations of chemicals that in actual practice 

 have proved best : 



Phos. 

 Nitrogen acid Potash 

 per cent, per per cent. 



cent. 

 Best results on plots at Hanover came from mixtures 



containing ....,._.. 2.5 5.75 25.0 



