60 



PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



improvement, but no difference could be detected between those 

 which were purely nitrogenous and those which got guano-ash 

 in addition. The plots which got guano-ash alone were entirely 

 unaffected, and during the whole season remained completely on 

 a par with the nothiug plots. During the dry weather in June 

 the sulphate of ammonia plots made greater progress than any 

 of the others, and the superiority thus acquired was maintained 

 during the whole of the season. After the fall of rain which 

 took place in the end of July, the Peruvian guano plots got 

 a-head of the uric acid and glue, and preserved this position 

 when the grain was ripe. The crop was reaped on the 18th 

 August, carried 8th September, and thrashed 29th September. 



Table II. Field Plan of tlie experiments on Oats, shoiving the 

 position of the idiots, the manures, and the amount of 

 produce in lbs. : — 



