[ 261 3 



red coral 46.5 of animal matter, and 53.5 of carbon- 

 ate of lime; articulated coraline 51 of animal matter, 

 and 49 of carbonate of lime. 



These substances are, I believe, never used as ma- 

 nure in this country, except in cases when they are ac- 

 cidentally mixed with sea weed ; but it is probable that 

 the coralines might be advantageously employed, as 

 they are found in considerable quantity on the rocks, 

 and bottoms of the rocky pools on many parts of our 

 coast, where the land gradually declines towards the 

 sea ; and they might be detached by hoes, and collect- 

 ed without much trouble. 



Amongst excrementations, animal substances 

 used as manures urine is the one upon which the 

 greatest number of chemical experiments have been 

 made, and the nature of which is best understood. 



The urine of the cow contains, according to the 

 experiments of Mr. Brande, 



Water - - - 65 



Phosphate of lime - 3 



Muriates of potassa and ammonia - 15 

 Sulphate of potassa 6 



Carbonates, and potassa, and ammoriia 4 

 Urea - 4 



The urine of the horse, according to Fourcroy 

 and Vauquelin, contains 



Of carbonate of lime 1 1 



carbonate of soda 9 



benzoate of soda - 24 



Muriate of potassa 



Urea 7 



Water and mucilage -. 94O 



