198 . MANURE. 



cow-dung. 100 lbs. of that afford 2 lbs. of carbonate of 

 ammonia ; while this evacuation gives 4 lbs. of ammonia in 

 its urea, besides that in its other ammoniacal salts. 



244. The quantity of liquid manure produced by one cow 

 annually, is equal to fertilizing 1-^ acre of ground, producing 

 effects as durable as do the solid evacuations. A cord of 

 loam, saturated with urine, is equal to a cord of the best 

 rotted dung ; and the fresh urine of one cow is valued in 

 Flanders at |10 per annum. If the liquid and the solid 

 evacuations including the litter, are kept separate, and the 

 liquid is soaked up by loam, it has been found they will 

 manure land, in proportion by bulk of 7 liquid to 6 solid, 

 while their actual value is as 2 to 1 



245. 100 lbs. of cattle urine afford about 8 lbs. of the 

 most powerful salts which have ever been used by farmers. 

 The simple statement then, in figures, of difference in value 

 of the solid and liquid evacuations of cattle, should impress 

 upon all the importance of saving the last in preference to 

 the first. Let both be saved. If the liquids contained natu- 

 rally, geine, they might be applied alone. It is the want of 

 that guiding principle which teaches that salts and geine 

 should go hand in hand, which has sometimes led to results 

 in the application of the liquor, which have given this sub- 

 stance a bad name. 



246. It has been proved that the ammoniacal salts of 

 urine have a forcing power on vegetation. The value of 

 ammonia was long ago understood by Davy, and its carbon- 

 ate was his favorite application. Plants watered with a 

 simple solution of sulphate of ammonia, an abundant salt in 

 cow's urine, are 15 days earlier than those watered with 

 pure water. Grass land watered with urine only, yields 

 nearly double to that not so manured. In a garden on land 

 of very poor quality, near Glasgow, urine diluted with water, 



