178 STATE BOARD OF AGRICULTURE. 



I cleared a piece of land a few years after, and I told the man I would 

 experiment on that piece of new land. I did so by sowing plaster on half 

 of a ten acre lot, and I sowed salt on the other half. For two years, it 

 showed the effect of the salt, but where the plaster was sowed, it never 

 showed at all. 



BARNYARD MANURE AND COMMERCIAL FERTILIZER.-COMPOSITION COMPARED -ONE 



TON OF EACH TAKEN. 



Manure. 



-Ammonia. 



-Potash. 



-Phosphoric Acid. 



