Localities of Minerals, 237 



7< Fetid Carbonate of Lime. In ridges ; and strata nearly 

 vertical, sometimes containing petrifactions. Very 

 frequent in Dutchess county, particularly in the 

 neighbourhood of Rhinebeck Flats, and near Hyde 

 Park. 



8. Fibrotts Talc. In granite. Roxborough. 



9. Graphic Granite. North River, near the city of New- 



York. 



10. Graphite. In a calcareo-siliceous gangue. Corlear's 



Hook. 



1 1 . Native pulverulent (or rather granular) Sulphur. In 



pyritical quartz. Barren Hill, Montgomery county, 

 Pennsylvania. 



12. Plumose Asbestus. Corlaer's Hook. 



13. Semi-opal. In common Jasper — (which see.) 



14. Scaly Talc. In granite. Roxborough. 



15. Stellated Quartz. Perkiomen lead-mine. 



16. Sulphate of Barytes. In sulphuret of lead and silver. 



Livingston's lead-mine, Columbia county, New- York. 



17. Sulphuret of Silver. With sulphuret of lead. Same 



locality. 



18. Tourmalin. In masses of crystaiUne quartz. Rhinebeck. 



Very respectfully, 



F. C. SCHAEFFER. 



The following notices were prepared before the receipt of 

 the above letter. 



Other Localities of Minerals and ©/"animal remains, and acknow- 

 ledgments of Specimens received. 



Guadaloupe.—'NdAiye sulphur, obsidian, pitchstone, native 

 alum, basaltic hornblende, alum covered with sulphur. 

 Porto Rico. — Hexagonal crystals of mica. 



Specimens of the above minerals are in the cabinet of Mr. 

 John P. Brace, at Litchfield, Connecticut. 



