Fig. 59. 



Fig. 60. 



no 



Fig. 01. 



Ha^j. z:,L>jL. I 



Fig. 62. 



Fig. 64. 



Fig. 63. 



Magnification, 72 x . Fig. 60, etched with ammonia and hydrogen peroxide, followed by 

 acidified ferric chloride. Figs. 62 and 64, etched with ammonia and hydrogen peroxide. 



