PLATE XIV, 
Figs. 1—5.— Native Silver. 
1. Native Silver, in extended partially prismatic and curved branches, silver white, dim, with small crystals of magnetic 
quartz on yellowish cal cite, from Kongsberg, Norway. 
2. The same, cubes superimposed on each other, perfectly smooth, partially foliated, from the same place, of very recent 
occurrence. 
3. The same , aggregation of cubes and quadratic tables, partially marked with octahedral structure, from the same place. 
4. Native Silver, laminated, the plates a line in thickness, with arborescent markings, partly filiform at the edges, partly 
bordered by crystals, rhombic dodecahedrons, octahedrons and cubes, with a reddish tarnish; of earlier occurrence (between 
1780-90), from Kongsberg. 
5. Native Silver , arborescent, or reddish heavy spar, the branches consisting of octahedrons placed on one another, from 
Heinrichsgang at the Anton Mines, at Wolfacli in the Black Forest. Occurrence, in 1836. 
All the silver-ores are figured of their natural size. 
Figs. 6—8.—Antbionial Silver. 
6. Ant.imonial Silver , primary form a right prism, with truncation of the acute lateral edges. 
7. The same, simple rhombic prism imbedded in heavy spar, both from St. Wenzel in the Schwamvald. 
8. Finely granular antimonial silver , containing 84°/ 0 of silver, and 16% of antimony, also embedded in heavy spar, from 
the same locality. 
Figs. 9—16. —Sulphuret of Silver,. Glance and Red Silver Ore. 
9. Glance Silver, primary form a cube, arranged in a druse, containing 85 of silver and 15 of sulphur, from St. Wenzel, 
near Wolfacli. 
10. The same, cube and octahedron, elongated and wedge-shaped, from St. Anton, in Heubachthal, near Wolfach. 
11. Brittle Glance Silver, or Melan Glance, prismatic black silver, right rhombic prism, with truncation of the acute 
lateral edges, several crystals arranged in a group, from Freiberg in Saxony. 
12. Polybasite, the primary form a.rhombic hexagon ; the figure represents a secondary hexagonal prism, with trunca¬ 
tion of all the basal edges. 
13. Dark-red, or Ruby Silver, antimony, silver-blende, the primary form a rhombic hexagon; combination of different 
acute and obtuse rhombohedrons in a group of crystals, from Andreasberg in the Hartz. 
14. The same, various hexagonal prisms, arranged in a druse, from Freiberg in Saxony. 
15. Light-red, or Ruby Silver , combination of the common with the obtuse rhombohedron and the hexagonal prism. 
16. The same, unequal edged hexagonal double pyramid (scalenohedron), in combination above and below with the 
rhombohedron. Both kinds of forms occur at the Harz and Erz mountains. 
