﻿Phil. Mag. Ser. 6, Vol. 12, PI. V. 



Kl'THERFORD.] 



Fig. 2. 



DIDI 



A B C D 



Rutherford 

 & Hahn\ 



Fig. 1. 



CBAA'B'C E F 



II II 



Fig. 2. 



Fig. 3. 



A B 



A B 



