512 



MEASUREMENTS OF CRYSTALS. 



ZIRCONTTE. (Continued.) 



Pons 117°48' 



Pont 152 6 



I on* 135 



(The remaining measurements are given 

 on page 510.) 



NATIVE IRON. Pig. 436. Page 382. 



Fig. 436. The primary, a regular octa- 

 hedron. 



MAGNETIC IRON ORE. 

 clusiTe. Page 383. 



Figs. 437 to 444 in- 



Fig. 437. The primary, a regular octa- 

 hedron. 



PonP' 109°28'16" 



Fig. 438. A cuneiform octahedron from 



Essex county. 

 Figs. 439, et seq. 



Pont 1250I5'52" 



