MANURE J =TODUCED BY DIFFERENT ANIMALS. 



Quantity of manure in lbs., prodliced by 



Water in 



From ICK.> lbs. of tub cow. the horse. the shkep. the manure, 



fresh, dried, fresh, dried, fresh, dried. per cent. 



Rye — — 212 53 — — 75 



Oats — — 204 51 — — 75 



Rye and other straws(chopped)2r.8 43 168 42 117 40 66 to 84 



Hay 275 44 172 43 123 42 do. do. 



Potatoes (containing 72 per ct. 



of water) : 87i 14 — — 38 13 do. do. 



Tumips (containing 75 per cent. 



of water) 37* 6 — — — — 84 



Carrots (87 per cent, of water) 37^ 6 — — — — 84 



Green Clover (79 per ct, water) G5J 9^ — — — — 86 



After 8 days. After 3 weeks. After 8 weeks. 



Rye Straw (used for bedding) 238 96 269 97 206 95 54 to 64 



One important theoretical result is presented in this table — that 

 the wanure voided by an animal contains very much less solid matter 

 than the food it has consumed. We shall presently see how this fact 

 is to be explained (p. 472), and, at the same time, what light it throws 

 upon the quality of the manure produced. • 



The most valuable practical results from the above experiments are — 



1^. That for 100 lbs. of dry fodder the horse or cow will give on 

 an average 216 lbs. of fresh or 46 lbs. of dry manure — the sheep 128 

 lbs. moist or 43 lbs. dry. 



2°. That root crops, on an average, give about half their weight 

 of fresh or one-twelfth of dry manure — the potatoe giving more and. 

 the turnip less. 



3^. That green crops give about half their weight of fresh or one- 

 eighth of dry manure. 

 § 14. Of the relative fertilizing values of different animal excretions. 



\°. The theoretical value of different animal excretions calculated 

 solely from the quantity of nitrogen which the specimens examined 

 were found respectively to contain, is thus given by Payen and Bous- 

 singault. The numbers opposite to each substance indicate the weights 

 of that substance which ought to produce an equal effect with 100 lbs. 

 of farm-yard manure in the recent and in the dry states : — 



Equal effects ought to be produced by 

 in the dry state. artificially dried. 



Farm yard dung 100 lbs. 100 lbs. 



Cow 125 " 84 « 



Do.urine 91 « 51 « 



Horse 73 " 88 « 



Mixed excrements of the — Pig 63 " 58 " 



Horse 54 " 64 " 



Sheep 36 " 65 " 



Pigeon 5 " 22*" 



Poudrette lOj " 44 « 



Another variety 26 « 73 « 



Too much reliance is not in any case to be placed upon the princi- 

 ple of classifying manures solely by the proportion of nitrogen they 

 contain (pp. 441 & 454) — much less can we depend upon the order of 

 value it assigns to substances the composition of which is liable to 



