518 



Lwrganic Constituents of Plants. 



III. Additional Analyses of Seed- Ashes. 



Potash 



Soda 



Lime 



Magnesia 



Peroxide of iron 



Phosphoric acid 



Sulphate of lime ... 

 Chloride of sodium. . . 



Silica 



Phosphate of per-\ 

 oxide of iron ... J 



Kleinschmidt. Buch. 

 Acorn.* Saintfoin.* 



64-64 



4-89 

 5-57 



15-62 

 4-73 

 0-98 

 0-96 



2-61 



6-75 

 20-33 



8-57 



54-89t 

 2-87 

 218 

 110 



3-31 



It is of great importance that analyses .should be made of 

 the ashes of the most widely differing plants, and also of those 

 of the same kind of plant grown on very different kinds of soil. 

 This can only be accomplished, however, by the persevering 

 cooperation of many chemists. The examples given above 

 show how beautiful and fertile in their consequences are the 

 results obtained by ash-analyses; and we hope that by means 

 of the methods herein described, the work will be rendered 

 somewhat more easy. 



The difference in the solubility of the nitrogenous ingredi- 

 ents of the Leguminosa?, as regards their vegetable casein, and 

 the nitrogenous ingredients of the Cereals, in respect of vege- 

 table fibrin, arises evidently from the greater amount of alka- 

 line bases contained in the seeds of the Leguminos£B, in com- 

 parison to the quantity of phosphoric acid, to which they have 

 immediate reference. This larger quantity of base causes the 

 t Phosphate of lime. 



