On The lime content oP phanerogamic parasites. 3$9 



Albino leaves. 



Green leaves. 



CaO 

 MgO 



8.25^ 

 6.52^ 



24-50 % 

 9-55% 



In the above-ground part of Gastrodia I found the ratio to 

 be nearly 1:1. 



This fact indicates very clearly again that the chlorophyll- 

 content determines the ratio between lime and magnesia in the 

 leaves. The more chlorophyll there is, the greater will be the 

 proportion of lime in regard to magnesia. 



1 In the root crops and tuliers, the ratio 



CaO 



is about 1 or less. 



MgO 



