214 AGRICULTURAL EXPERIMENT STATION. [Jan. 



their potash in the form of muriate of potash and others in 

 the form of the highest grade of potassium sulphate (95 per 

 cent.). The subsequent tabular statement shows the quan- 

 tities of the manurial substances applied to the different 

 plats : — 



This proportion corresponds per acre to : — 



Pounds. 



Phosphoric acid (available), 50.4 



Nitrogen, 60.0 



Potassium oxide, 120.0 



Beets, cabbages, celery, lettuce, spinach, tomatoes and 

 potatoes have thus far been raised upon the field. 



The order of arrangement of the different crops within 

 each plat was the same in all of them for the same year. 

 They occupied, however, a different position relative to each 

 other in successive years, to introduce, as far as practicable, 

 a svstem of rotation of crops. 



