HOW TO EXPERIMENT. 



one-third of an acre each (a convenient size would be 

 ft. x 93! ft.), and fertilizer applied as follows: 



No Fertilizer. 1. 



I 



Phosphoric Acid. 2 



Nitrogen. 



Potash. 



Phosphoric Acid, 

 Nitrogen. 



From this simple plan can be learned the following 

 lessons: 



Plot No. i shows what the land without any fertilizer 

 will produce. 



Plot No. 2 shows the effect of nitrogen and phosphoric 

 acid, without potash. 



Plot No. 3 indicates what effect an average complete 

 fertilizer will have. 



