62 APPENDIX. 



Composition of the whole ash : 



Soluble in water, 18.27 per cent : 



Soluble silica . . . . 3.16 



Phosphate of lime . . . 4.75 



Lime . . . . - 1.44 



Magnesia . . . .0.59 



Potash . . . ... 5.58 



Soda . . . . . . 0.29 



Chloride of sodium . - . . 0.46 



Sulphuric acid . . . .0.72 



Carbonic acid and loss . . . 1.28 



Insoluble in water, 81.73 per cent: 



Soluble silica . . . . 17.69 



Insoluble silica . . . .12.54 



Phosphate of lime 



Oxides of iron alumina with phosphates 11.76 

 (Containing phosphoric acid, 3.40 per cent.) 

 (Equal to bone-earth, 7.36 per cent.) 

 Lime . . - . . .20.70 



Magnesia * . . 1.17 



Potash . . . . . - 0.56 



Soda . . . . . 0.47 



Chloride of sodium 



Sulphuric acid . . . .0.79 



Carbonic acid and loss . . . 16.05 



100.00 



NOTE XIII. (p. 39). 

 COMPARISON OF FRESH AND ROTTEN MANURE (WOLFF). 



Fresh. Moderately rotten. 

 (Taking the quantity of dry mat- 

 ter as the same.) 

 Dry matter .... 25.00 25.00 



Ash 3.81 4.76 



Nitrogen 0.39 0.49 



Potash 0.45 0.56 



Lime 0.49 0.61 



Magnesia . . . . 0.12 0.15 



Phosphoric acid . . . 0.18 0.23 



Sulphuric acid . . . . 0.10 0.13 



Silica 0.86 1.08 



