of Several Minerals. 123 



30. Black Hematite, (uncleavable manganese-ore,) 4.145 



31. Black Hematite, from Wiesenthal, in Saxony, 4.150 



32. Grey Manganese-ore, crystals, streak brown, 4.322 



33. Grey Manganese-ore, soft, streak black, fragments of crys- 

 tals, 4.452 



34. Grey Manganese-ore, a massive variety, consisting of short 

 fibres, 4.605 



35. Grey Manganese-ore, crystals, from Jhelefeld, streak black, 4.626 



36. Grey Manganese-ore, a massive variety, consisting of long 

 delicate fibres, 4.787 



Order IX. Metal. 



1. Native Arsenic, in curved lamellar compositions, 5.766 



2. Native Antimony, a massive variety, consisting of granular 

 particles, 6.646 



3. Native Antimony, cleavable masses, 6.667 



4. Native Bismuth, from Altenberg, in Saxony, 9.737 



5. Bismuth, melted, 9.612 



6. Amalgam, a single crystal, from Moschellandsberg, 13.755 



7. Native Gold, a rounded mass, of a fine gold yellow colour, 14.848 



8. Native Platinum, large grains, 17.332 



9. Meteoric Iron, part of the mass found at Elbogen, in Bohe- 

 mia, 7.768 



Order X. Pyrites. 



1. Prismatic Arsenical-pyrites, a fibrous variety, from the Ban- 



nat, 5.960 



2. Prismatic Arsenical-pyrites, thick columnar particles of com- 

 position, 5.960 



3. Prismatic Arsenical-pyrites, massive, composition granular, 6.023 



4. Prismatic Arsenical-pyrites, thick columnar individuals, ex- 

 tracted from a massive variety, 6.040 



5. Prismatic Arsenical-pyrites, crystals, from Tunaberg, 6.208 



6. Axotomous Arsenical-pyrites, disengaged from the serpentine, 



in which it is imbedded, from the same locality, 7.070 



7. Axotomous Arsenical-pyrites, massive, from Reichenstein in 

 Silesia, 7.228 



8. Axotomous Arsenical-pyrites, crystalline, cleavable masses, from 

 Schladming, in Stiria, 7.267 



9. Octahedral Cobalts-pyrites, crystals, from Schneeberg, in Sax- 

 ony, 6.340 



10. Octahedral Cobalt-pyrites, the elongated crystals, usually im- 

 bedded in quartz, 6.430 



11. Octahedral Cobalt-pyrites, crystalline fragments, showing 

 traces of cleavage, 6.466 



12. The Grey Cobalt of Werner, fragments of a massive variety, 

 consisting of very small individuals, 6.566 



