THE DE RIIAM DONATION. 13 



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



Cumberland, England. 



64 Fluor spar, crystallized in cubes of a beautiful green. Cumberland. 



65 Fluor spar, crystallized in cubes ; colorless. 



66 Fluor spar, incrustcd with crystals of carbonate of lime. 



67 Veined fluor, polished. Derbyshire. 



68 Veined fluor, called by the miners blue John. 



69 Group of quartz crystals, incrusted with transparent terminated 



six-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. II. 



82 Staurotide. Litchfield, Massachusetts. 



83 Staurotide. Franconia. 



81 Brucite, in carbonate of lime. Warwick, NewA'ork. 



85 Onyx agate. Siberia. 



86 CHRisopRASE. 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 Bed 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? incrustiug quartz crystals. Caldbeck-fells, 



