ASHES. 201 



multiplied in no ordinary degree within the few last years. 

 For the fullest view of them, we refer to the Annual Report 

 for 1849, by Liebig, Kopp and others, and give here only an 

 example of such analyses. 



Ashes of Pine-wood. — Sacc's analysis (Ann. de Chim. et de 

 Phys. XXV.) gives the following result : 



Silica 10.8667 



Sulphuric acid 1.2844 



Phosphoric acid 3.5569 



Chlorine 0.1229 



Peroxide of iron 2.6018 



Protoxide of manganese 2.6498 



Magnesia 3.9873 



Lime 58.6475 



Potassa 2.3076 



Soda 13.9751 



Ashes of Coffee. — T. J. Herapath, who analyzed the ashes 

 of the berries of the coffea Arabica, with a view to the deter- 

 mination of the best manure for promoting the growth of the 

 plant, obtained the following per centage composition. (Ch. 

 Gaz. vi.) 



Phosphoric acid 19.801 



Sulphuric " 0.244 



Potassa 16.512 



Soda 6.787 



Chloride of sodium 0.645 



Lime 2.329 



Magnesia 5.942 



Sulphate of lime 1.751 



Phosphate of lime 45.551 



Silicic acid 0.438 



100.000 



The author calculates, from this analysis, that every ton 

 of berries removes from the soil the following proportions of 

 mineral substances : 



