FERTILIZERS. 271 



According to Berzelius, the solid excrements of raan yield, in 1000 parts, 850 of water, 

 the remainder is ash which is composed of, 



Phosphate of lime and magnesia 100*00 



Sulphates of soda and potash and phosphate 



of soda 8-00 



Carbonate of soda 8-00 



Silica, 16-00 



Charcoal and loss, 18*00 



150-00 



We find, therefore, that they are rich in phosphates and other valuable matters. I have no 

 doubt that in the older parts of our country, where high cultivation is found profitable, all pro- 

 per attention will ultimately be paid to the preservation of fertilizers. 



The urine is composed, according to the same distinguished chemist, in 1000 parts, 



Solid residue in 100 parti 



Water, 933-00 



Urea, 30-00 44-39 



Free lactic acid, lactate of ammonia, extractive 



matter, 17-14 25-58 



Uric acid, 1-00 1-49 



Mucus of the bladder, 0-32 0-48 



Sulphate of potash, 3-71 5-54 



Sulphate of soda, 3-16 4-72 



Phosphate of soda 2-94 4-39 



Biphosphate of ammonia, 1 • 65 2 • 46 



Common salt, 4-45 6-64 



Muriate of ammonia, 1 * 50 2-23 



Phosphates of magnesia and lime, 1 ' 00 1-49 



Silica, 0-03 0-05 



1000-00 100-00 



The drainings of barn yards afford a liquid matter which, perhaps, is less rich than when the 

 liquids of animals are collected in tanks secured from rain water. Johnston, who has analyzed 

 these drainings, gives the following as the result : an imperial gallon gives an ounce of dry 

 solid matter and consists of, 



Ammonia, 9*60 



Organic matter, 200-80 



Inorganic or ash 268-80 



479-20 



