URINE. 



141 



In all the remarks then that follow, we must 

 be considered as speaking of human urine; but 

 the same arguments will apply to the urine of 

 all animals, only in lesser proportion. 



And it must be again repeated that the liquid 

 excrement of all animals is infinitely to be pre- 

 ferred as a fertilizer to the solid excrement, the 

 urine in all cases containing all the soluble 

 salts which are thrown off from the body as 

 waste matter; such as the ammoniacal salts, 

 the phosphates of soda, potash, and magnesia, 

 the substances which are now recognised as 

 constituting the ingredients of all kinds of 

 grain, and which are essential both to their 

 growth and development, and for supplying 

 the nutritive matter of the grain. 



Berzelius gives, as the contents of 1000 parts 

 of human urine in his elaborate analysis of the 

 fluid, 



parts 



" If, from the above analysis, we take the 

 urea, lactate of ammonia, uric acid, the phos- 

 phate and muriate of ammonia, one per cent, 

 of solid matter remains, consisting of ammo- 

 niacal salts, which must possess the same 



13* 



