512 



MEASUREMENTS OF CRYSTALS. 



ZIRCONITE. (Continued.) 



P ons 117°48' 



P out 152 6 



I ons 135 



(The remaining measurements are given 

 on page 510.) 



NATIVE IRON. Fig. 436. Page 382. 



Fig. 436. The primary, a regular octa- 

 hedron. 



MAGNETIC IRON ORE. 

 elusive. Page 383. 



Fi<rs. 437 to 444 in- 



Fig. 437. The primary, a regular octa- 

 hedron. 



P onP' 109°28'16" 



Fig. 438. A cuneiform octahedron from 



Essex county. 

 Figs. 439, et seq. 



P on? 125°15'52" 



