40 



VOELCKER on the Chemistry of Food. 



dried state. Both the rye and rape were grown on a calcareous 

 soil near Cirencester, and analysed by myself : 



Composition of Green Kape and Rye. By Dr. A. Voelcker. 



Rape-leaves, like cabbage, contain moreover a considerable 

 quantity of sulphur and phosphorus, in a peculiar state of 

 organic combination. 



In two different samples of rape the percentage of sulphur and 

 phosphorus was found, for the dry substance 



The dry leaves thus contained nearly one per cent, of sulphur, 

 and an equal amount of phosphorus in organic combination. 

 Arranged into groups according to the chief classes of alimentary 

 principles, the composition of green rye and rape may be repre- 

 sented as follows : 



