MANURES FOR SPECIAL CROPS. 



279 



own immediate supervision. Everything was done that was 

 deemed necessary to secure accuracy. 



"The following table gives the results of the experiments: 



TABLE SHOWING THE RESfLTS OF EXPERIMENTS ON INDIAN CORN. 



" The superphosphate of lime was made on purpose for these 

 experiments, and was a pure mineral manure of superior quality, 

 made from calcined bones ; it cost about 2^ cents per pound. The 

 sulphate of ammonia was a good, commercial article, obtained 

 from London, at a cost of about seven cents per pound. The ashes 

 were made from beech and hard maple (Acer saccharinum} wood, 

 and were sifted through a fine sieve before being weighed. The 

 guano was the best Peruvian, costing about three cents per pound. 

 It was crushed and sifted before using. In sowing the ashes 

 on plot 7, ah error occurred in their application, and for the 

 purpose of checking the result, it was deemed advisable to repeat 

 the experiment on plot 10. 



" On plot 5, with 300 Ibs. of superphosphate of lime per acre, the 

 plants canie up first, and exhibted a healthy, dark-green appear- 



