201 MANURE. 



Solid lbs, 

 Man excretes in 24 hours, 3 pints or 1000 lbs. per annum, giving 30 to 170 

 Horse " " " 3 " 1000 " " 60 to 124 



Cow *« " «' 40 «' 7000 to 12000 '< 490 to 1440 



Unless she is a milch cow, when the quantity is affected by 

 that of the milk; the more milk, the less urine. 



The abundant urine of a cow, though containing less solid 

 matter than that of a horse, yet agriculturally, it is more 

 valuable. Quantity more than compensates for quality. 



The quantity of liquid drank affects little that of the urine 

 discharged by cattle and other animals, while in man the 

 result is different. 



Alan discharges nearly all the water drank, as urine; 

 while a horse which drank in 24 hours 35 pints of water, 

 evacuated 3 pints of urine, and a cow which drank in 24 

 hours 132 pints of water, evacuated 18 pints of urine, and 

 gave 19 pints of milk. By the late trials of Barral, common 

 salt appears to increase the amount of nitrogen and urea in 

 the excrements. An important hint for the use of salt in 

 feeding animals. 



It has been proposed by Stenhouse, to add milky lime 

 (slacked lime diffused in water) to urine, to stir it well, and 

 let it settle. A portion of phosphoric acid is thus separated, 

 as phosphate of lime. Air-slacked lime may be also thus 

 used, the powder being sprinkled into the urine, and well 

 stirred. The clear liquor may be run off, but this is a loss. 

 Phosphates only are thus saved. Hence that great practical 

 farmer and chemist, Boussingault, has proposed to add a 

 solution of magnesian salts to urine. For this purpose 

 Epsom salts may be employed, while those who live near 

 salt works may use the '* Bittern " liquor, or muriate of 

 magnesia, for this purpose. By this process, both a portion 

 of the ammonia and Dhosphoric acid are separated and fall 



