510 



MEASUREMENTS OF CRYSTALS. 



CHRVSOBERYL. (Continued.) 



Figs. 404 to 413 inclusive, compound 

 tabular crystals of various forms, 

 the descriptions of which will be 

 found on pages 376 and 377. (Fig. 

 404 is a dissected six-sided table, 

 the striae being represented only in 

 the lower part.) 



ZIRCONITE. Figs. 414 to 433 inclusive. Page378. 

 Fig. 414. The primary, an obtuse octa- 

 hedron with a square base. 



ZIRCONITE. 



P on P over the base, 84°20' 



P on P over a pyramidal edge, 123 15 

 Figs. 415, et seq. 



P on I 131°49' 



P onw 152 8 



P ona; 150 5 



I onZ 90 



I onw 159 17 



I ona? 142 55 



