25G 



ASHES OF PLANTS 



ASHS OX* PI.AJTTS. The ashes of all species of woods and woods aro found 

 to contain some alkali ; henco it is that the residuary matter, after tho combustion of 

 any vegetable matter, acts as a stimulant to vegetable growth. 



Tho following analyses of plants have been selected from the Tables which have 

 been published by Messrs. Thomas "Way and G. Ogston, in tho ' Journal of tho Agri- 

 cultural Society : ' 



A few additional analyses, by Prof, Way and other chemists, are given for the pur- 

 pose of showing the variations which exist in tho constituents of plants as determined 

 by the analysis of their ashes : 



The large amount of silica found in tho grasses, constituting, as it does, much of their 

 outer coating, cannot fail to bo noticed. Tho variations in the quantities of phosphoric 

 acid are instructive. 



A vast number of analyses of the ashes of plants have been collected and systema- 

 tically arranged by Dr. Emil Wolff in his ' Aschen-Analysen von landwirthschaftlichen 

 Producton, Fabrik-Abfallen und wildwachscndon Pflanzen.' 4to, Berlin, 1871. 



Qriepenkerl. 



Griepenkerl. 



A. MUllcr. 



Way. 



Hubert. 



Way.. 



