128 
Summarizing, I am inclined to reject with DeBije and SCHERRER 
the existence of the binding rings in diamond as long at least as 
no other assumptions give us another insight into this question. Mean- 
while investigations (comp. § 1) on other tetra-valent elements, 
perhaps also on solid hydrogen are desirable in order to obtain 
more detailed indications on the configuration of the electrons in 
the electronic sphere. 
only he had continued his calculation so far that a direct comparison with the 
experimental data had been possible. 
