THE DE RHAM DONATION. 



13 



63 Fluor- spak, crystallized in cubes of a beautiful bluish tint. From 



Cumberland, England. 



64 Fluok, spah, crystallized in cubes of a beautiful green. Cumberland. 



65 Fluor spak, crystallized in cubes ; colorless. 



66 Fluor spae, incrusted with crystals of carbonate of lime. 



67 Veined fluor, polished. Derbyshire. 



68 Veined floor, called by the miners blue John. 



69 Group of quartz crystals, incrusted with transparent terminated 



si?^-sided prisms of heavy spar. 

 70, 71 Two six-sided prisms of quartz, with six-sided pyramids of a 



beautiful brownish tinge. 



72 PsEUDOMORPHOus QUARTZ, Sprinkled with blende. From Alston, Eng, 



73 Talc. 74 Green talc. 75 Black spinelle. 



76 Brown garnet : crystals with twenty trapezoidal faces. 



77 Green felspar. Siberia. 



78 Glassy felspar. Near Bonn. 



79 Chrysoberyl. Near Saratoga-springs, 



80 Beryl. Acworth, New-Hampshire. 



81 Beryl (imbedded). Acworth, N. H, 



82 Staueotide. Litchfield, Massachusetts, 



83 Staurotide. Franconia. 



84 Brucite, in carbonate of lime. Warwick, Ngw^York, 



85 Onyx agate. Siberia. 



86 Chrxsoprase. Baumgarten. 



87 Olivine. Habichtwald. 



88 Cyanite. Chesterfield. 



89 Asbestus. Greenwood furnace, Orange county, New- York. 



90 Gold ore. Charlotte, North-Carolina. 



91 Silver ore. Siberia. 



92 Muriate of silver. Siberia. 



93 Copper ore. Franklin, New-Jersey. 



94 Arseniate of copper, on arsenical iron, Amity, New- York. 



95 Bed oxide of copper. Siberia. 



96 Red oxide of copper, incrusted with green carbonate of copper and 



quartz. Siberia. 



97 Blue carbonate of copper. Siberia. 



98 Malachite. Siberia. 



99 Veins of lead ore. From the Odin mine, 



100 Slickenside galena. From the Odin mine, 



101 Arseniate of lead. From Caldbeck-fells, Cumberland. 



102 Arsenical pyrites? incrjisting quartz crystals. Caldbeck-fells. 



