42-489 

 Water, 967-511 



There is scarcely a single element in this liquid 

 \rhich is not essentially an ingredient in all plants. 

 In every 100 lbs. of cow's urine, are 



Urea, 5* lbs. 



In horse's urine, *70 " 



In human urine, 2-36 " 



249. The urea being called equal to ammonia, it 



is seen that the ammoniacal salts in human urine are 



very nearly the same as those in cow dung, but its 



effects in actual practice are found to be nearly 



double that of dung, a circumstance easily accounted 



for by the greater quantity of other salts, being nearly 



double those in cow dung. The actual amount of 



salts in 100 parts of human, cow, and horse dung ; 



