444 PHYSIOGRAPHY. CLACS n. 



mass from Elbogen, and the larger specimen of those which 

 fell at Agram, are preserved in the imperial cabinet at 

 Vienna, which, besides, contains an extensive and interest- 

 ing collection of meteoric stones. Masses of this kind, 

 containing octahedral Iron, are those from Erxleben, be- 

 tween Halberstadt and Magdeburg, from Ensisheim, from 

 TAigle, and others. 



4. Octahedral Iron has been worked as an object of cu- 

 riosity into knives, swords, and other instruments. It 

 forms the substance of the rough shaped knives of some of 

 the Esquimaux tribes in North America. 



GENUS X. COPPER. 

 1. OCTAHEDRAL COPPER. 



Octahedral Copper. JAM. Syst. Vol. III. p. 89. Man. p. 

 265. Native Copper. PHILL. p. 296. Gediegen Kup- 

 fer. WERN. Hoffm. H. B. III. 2. S. 84. Gediegen- 

 Kupfer. HAUSM. I. S. 111. Gediegen-Kupfer. LEONH. 

 S. 251. Cuivre natif. HAUY. Traite', T. III. p. 518. 

 Tabl. comp. p. 85. Traite', 2de Ed. T. III. p. 423. 



Fundamental form. Hexahedron. Vol. I, Fig. 1 . 



Simple forms. H (r) ; 6 (n), Vol. I. Fig. 2 ; D 

 (s), Vol. I. Fig. 31., Lizard, Cornwall ; Aa, Vol. 

 I. Fig. 32., Nalsoe. 



Char, of Comb. Tessular. 



Combinations. 1. H. O. Vol. I. Fig. 3. and 4., 

 Cornwall. 2. H. D. Fig. 151. 3. H. O. D. 

 4. H. O. D. A 2. The three last from Siberia. 



Cleavage none. Fracture hackly. Surface gene- 

 rally not very smooth, but nearly of the same 

 quality in all the forms, only the dodecahedron 

 is sometimes streaked parallel to the edges of 

 combination with the hexahedron. It is subject 

 to tarnish. 



