Ashes and Soot 



these ashes chiefly in the form of carbonate, also as 

 sulphate and to a small extent as silicate. 



Washed Cinders. 



Washed cinders from bleaching houses or soap 

 works can be employed as an improvement. They 

 contain about 40 per cent, carbonate of lime, 3 to 5 

 per cent, phosphoric acid, and potash perhaps up to 

 I per cent. They can be used where carbonate 

 of lime might be applied, in strong and acid soils 

 generally, or even as a top dressing to pastures. 

 Their use is certainly advantageous, partly owing 

 to the phosphoric acid and potash they contain. 

 Their carbonate of lime is not so active as that of the 

 slag of defecations from sugar refineries. 



Bone Ash. 



Bone ashes come from the Argentine, and are 

 obtained by the incineration of fossil bones which 

 are found there in extensive layers. They contain 

 an average of from 72 to 73 per cent, tribasic 

 phosphate. Therefore they should only be used on 

 acid soils. Transformed into superphosphates they 

 make an excellent manure. They should be bought 

 by the unit of soluble phosphoric acid, but only 

 on analysis, because they generally contain many 

 impurities. 



Ashes of Peat. 



These must be regarded simply as improvements, 

 since generally they contain only lime, first in the 

 form of carbonate, and, secondly, in the form of 

 sulphate. Very little potash or phosphoric acid is 



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