/ and Rosenhain. 



Phil. Trans.. A, Vol. 193, Plate 22. 



Fig. 2.5. SII.VKK x 750. 



C*- *k-'* "A." 



- .'-- .A.. ^ 



I'ii,'. L'li. CADMIUM x 1000. 



27. CADMIUM x 1000. 



