Farmyard Manure. 



253 



It Avill appear from these analyses that in well-rotten farmyard 

 manure the soluble constituents are more readily wasted than is 

 the case with fresh dung kept in the same manner. On the 

 other hand, the percentage of insoluble organic matters, practi- 

 cally speaking, sustained no diminution by keeping the manure 

 in a heap exposed to the weather from December 5th, 1854, to 

 April oOth, 1855. In the two succeeding periods, embracing 

 the warmer months of the year, an appreciable loss in the inso- 

 lul3le organic matters appears to haye taken place ; and it is 

 in the two last periods that the soluble constituents haye been 

 wasted more abundantly than in the preceding months. 



The nature of this loss will become more conspicuous if we 

 calculate from the foregoing data the composition of the whole 

 experimental heap No. IV. This has been done in the sub- 

 joined Table : — 



Table showing Composition of Whole Hea]") (No. IV.), Well-rotten Dung, 

 Exposeil. In Xfitnral State. J^xpressed in lbs. and fractious of lbs. 



Ayhen 



put up. 



Dec. 5 ill, 



1854. 



April 30th, Aug. 23rd, ' Xov. 15th, 

 1855. I 1855. I 1S55. 



Weight of manure il613" 



1186- 



1023- 



1003- 



Amount of water in the manure 



Amount of dry matter 

 Consisting of — 

 ^Soluble organic matter 



Soluble mineral matter .. 

 •flusoluble organic matters 



Insoluble mineral matters 



*Containing nitrogen 

 Equal to ammonia , 



f Containing nitrogen 

 Equal to ammonia 



121G' 

 396' 



81S- 

 368- 



59-83 



23- 71 



20G-77 



lOG-19 



739-1 

 283-9 



26-lG ir3-35 11-38 



19-90 11-24 10-47 



187-97 127*47 123-79 



133-97 129-84 i 139-66 



737-7 

 285-3 



396-5 



368- 



283-9 I 285-30 



-92 

 •11 

 •65 

 -89 



Total amount of nitrogen in manure 

 Equal to ammonia 



9-78 

 11-89 



The manure contains ammonia in fix'e state 

 , , , , ammonia in form of) 



salts, easily decomposed by (luicklimc / 

 Total amount of organic matters .. 

 Total amount of mineral matters .. 



•74 



•92 



I 2GG-60 

 I 129-90 



10-72 

 13-01 



5 -89 

 7-15 



6-57 



8-00 



•06C 



•50 



214^13 

 153-87 



-034 



•29 



135-17 

 150-13 



A careful comparison of these analytical results will show : — 



1. That well-rotten dung loses little in substance durin^j: the 

 colder months of the year, proyided no lieayy rain falls. IShould 

 there be continued rainy weather, the result, I haye no doubt, 

 would be dineniit from that obtained in my experiments. 



2. In th(' warmer months of the year rotten dung decreases in 

 bidk and in weight more rapidly than in the colder seasons of 

 the year. 



