1908.] 



PUBLIC DOCUMENT — No. 33. 



51 



teenth year during which the land has been fertilized only with 

 this material) gives an increase at the rate of rather over 20 

 busliels of corn and nearly 21/^ tons of stover per acre. The 

 tables Avliich follow bring out the eifects of the different ferti- 

 lizer elements when used alone or in different combinations with 

 ofreat clearness : — 



Value of increase, 

 Financial result (loss), 



$3 891 

 11 



Value of increase, 

 Financial result (gain). 



$5 89 

 3 01 



Value of increase, $38 75 



Financial result (gain) 35 15 



1 The financial calculations in these tables were based on the following prices: — 



Nitrate of soda, $50 00 per ton. 



Muriate of potash 45 00 per ton. 



Dissolved bone black, 18 00 per ton. 



Lime 6 00 per ton. 



Plaster 10 00 per ton. 



Manure 5 00 per cord. 



Corn, 75 per l)U8h. 



Stover, 8 00 per ton. 



