6 Farmyard Manure. 



A well-mixed sample, on analysis, yielded the following 

 general results: 



General Composition of Decora 



Sheep Dung (3 years old}. 



Calculated Dry. 



Water 



* Soluble organic matter 



Soluble inorganic matter 

 flnsoluble organic matter 



Insoluble mineral matter 



In Natural State. 



.. 73-66 



2-70 

 .. 2-66 



9-95 

 ,. 11-03 



100-00 



10-25 

 10-09 

 37-78 

 41-88 



100-00 



* Containing nitrogen 



Equal to ammonia 

 f Containing nitrogen 



Equal to ammonia 



Total amount of nitrogen 

 Equal to ammonia 



157 

 190 

 470 



580 



627 



770 



590 



716 



1-790 



2-170 



2-380 

 2-886 



A delicate reddened litmus paper inserted into the neck of a 

 wide-mouthed bottle, into which some of this sheep-dung was 

 placed, was not altered in the slightest degree ; there was thus 

 not a trace of free ammonia present in the dung. 



When boiled with water, a small portion of ammonia was given 

 off, but that quantity was so insignificant that I determined at 

 once the total amount of ammonia which existed in the dung in 

 the form of ammoniacal salts. This was done by distillation 

 with quick lime and collecting the liberated ammonia in hydro- 

 chloric acid, evaporation to dryness in a water-bath, and weighing 

 the residue consisting of sal ammoniac. 



Proceeding in this way, I obtained from 100 parts of com- 

 pletely decomposed sheep-dung 



Ammonia 



(In the state of ammoniacal salts.) 



In Natural State. 



034 



Calculated Dry. 



129 



It appears, therefore, that the amount of ammonia present in 

 the form of ammoniacal salts is exceedingly small. 



In separating the soluble from the insoluble portion some very 

 finely divided silica passed through the filter, and was obtained 

 in the soluble portion of the ash. 



This portion of the ash contained in 100 parts : 



