APPENDIX. 61 



Composition of the whole ash : 



Soluble in water, 27.55 per cent : 



Soluble silica . . . .4.25 



Phosphate of lime . . . 5.35 



Lime . . . . .1.10 



Magnesia . . . .0.20 



Potash . . . . .10.26 



Soda . . . . .0.92 



Chloride of sodium . . . 0.54 



Sulphuric acid . . . .0.22 



Carbonic acid and loss . . . 4.71 



Insoluble in water, 72.45 per cent : 



Soluble silica . . . .17.34 



Insoluble silicious matter . . 10.04 

 Oxide of iron and alumina with phosphates 8.47 

 (Containing phosphoric acid, 3.18 per cent.) 

 (Equal to bone-earth, 6.88 per cent.) 



Lime . . . . .20.21 



Magnesia . . . .2.56 



Potash . . . . .1.78 



Soda . . . . .0.38 



Sulphuric acid . . . . 1.27 



Carbonic acid and loss . . . 10.40 



100.00 



Composition of rotten dung, six months old, is as 

 follows : 



Water ..... 75.42 



* Soluble organic matter . . . 3.71 



Soluble inorganic matter . . 1.47 



f Insoluble organic matter . . 12.82 



Insoluble inorganic matter . . 6.58 



100.00 



* Containing nitrogen . . . .297 



Equal to ammonia . . . .360 



t Containing nitrogen .... 309 



Equal to ammonia . . . .375 



Total amount of nitrogen . . .606 



Equal to ammonia . . . .735 



Ammonia in a volatile state . . .046 



Ammonia in form of salts .057 



