60 



Farmyard Manure. 



lowing Table, in which is stated the composition of the entire 

 mass of the experimental manure No. III. 



Table showing Composition of entire mass of Experimental Manure (No. III.), 

 fresh Farmyard Manure, spread. In Natural State. Expressed in Ibs. and 

 fractions of Ibs. 



This Table requires an explanatory notice. It will be observed 

 that the amount of insoluble mineral matters in the manure 

 increases greatly in every succeeding experimental period. Espe- 

 cially it is great in November, 1855. This increase is due 

 entirely to accidental admixtures of earthy matters, which could 

 not be excluded without losing some of the manure. It was 

 found, namely, impossible to collect the manure properly without 

 mixing with it some of the soil over which it was spread. On 

 the 23rd of August, 1855, the manure had shrunk to a very small 

 bulk, and on the 15th of November, 1855, the greater portion of 

 the manure appeared to have gone either into the air or to have 

 been washed into the soil. It was necessary therefore to scrape 

 the soil as close as possible in order not to lose any of the manure, 

 and it is due to this circumstance that at the conclusion of the 

 experiment a very much larger proportion of insoluble mineral 

 substances was found than in the perfectly fresh manure. I may 

 mention, however, that the whole mass of the spread manure has 



