PLATE XVII. 
Figs. 1—4.— Nickel Ores. 
1. Capillary Nickel, in small acicular bundles (hexagonal prisms), from the compact quartz or horn-stone of Johann- 
georgenstadt in Saxony. 
2. Red Arseniet of Nickel , compact, of a copper-red colour, with smaltine ; it presents a variegated tarnish on the upper 
surface, and presents small cubic crystals. From Riechelsdorf in Hesse. 
3. Chloanthite , or white nickel, containing cobalt, in cubes, from Schneeberg. 
4. Annabergite, or Nickel-ochre , or carbonate of nickel, on chronic iron-stone, from Bash ill, Baltimore. 
Figs. 5—13.—Cobalt Ores. 
Cobalt-pyrites , containing nickel in regular octahedral masses, from Miisen in Nassau. 
Cobalt-glance , or Cobaltine (pentagonal dodecahedron, or twelve-faced pentagon), in combination with the cube. 
The same, in combination with the octahedron. 
The same , (icosahedron), both from Tunaberg in Sweden. 
The same , cube, dodecahedron and octahedron, from the same place. 
Smaltine or Grey Cobalt , cube, with truncated angles (octahedron). 
The same , in a drusiform aggregation. 
Cobalt-bloom, stellate and foliated, on horn-stone, from Schneeberg. 
The same, oblique rectangular prism, with truncation of the lateral and terminal edges. 
Figs. 14 — 17. —Iron. 
14. Meteorolite, from Stannern in Moravia, enclosed in a fissured glass-like crust. 
15. Meteorolite, from Aigle, polished, of earthy fracture and grey colour, sprinkled to some extent with nickel-iron. 
16. Meteoric iron, studded over with grains of yellow and brownish olivine, which is partially decomposed, polished, from 
Atakama. 
17. Meteoric iron , with crystalline structure, the so-called Widmannstadt figures, from (Mexico. 
5. 
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