266 Catalogues of Rocks mid Minerals. 



16. Lenticular crystals of calcareous spar, with quartz 

 crystals, sulphate of lead and iron, Columbia County, near 

 Catskill. 



17. New-Jersey pectinites, near Ramapough. 



18. Red argillaceous sandstone of this character, stratifi- 

 ed, and in nearly horizontal positions, in many parts of the 

 Catskill mountains, alternates with gray sandstone from the 

 base to the summit.* 



19. Datholite, calc spar, and green earth, Patterson. 



20. A reddish brown graywacke, of this rock, the mural 

 precipices of RatFenberg and Green-pond mountains, Morris 

 County, New-Jersey, arc composed. 



21. Conglomerate, mostly feldspar and quartz, under 

 greenstone Pallisadoes, New-Jersey. 



22. Madrepores, found GO feet below the surface at Cor- 

 laer's Hook, New-York. 



23. Granite from a wide and deep vertical vein in granu- 

 lar limestone, Kingsbridge. 



24. Chalcedony, Pacquenack mountain, near Pompton 

 plains, New-Jersey. 



25. Greenstone, Patterson, New-Jersey. 



26. A vein of crystallized Carbonate of magnesia, Staten* 

 Island. 



27. Kingsbridge marble, white, crystallized. 



28. Toadstone and Patterson Amygdaloid, the carbonate 

 of lime exposed to the air has decayed, giving the specimen 

 a volcanic aspect. 



29. Chalcedony and Cacholong, Pracknes mountain, 

 New-Jersey. 



30. Serpentine and Amianthus, Hoboken. 



31. Ferruginous puddingstone. High-hills of Neversink. 



32. Anomias and Terebratulas. — 1 found this specimen 

 connected with a solid mass on the Catskill mountains, 

 1500 feet above the Hudson. 



33. Catskill encrinites. 



34. Feldspar, found in quantity connected with decom- 

 •posing feldspar and quartz rock, and Kaolin, Weehawk, 

 New-Jersey. 



35. Granular limestone, Singsing, Westchester County, 

 New- York. 



* Now believed to be varieties of graywacke slate, as observed (Judq, 

 1822) by Mr. Pierce and the Editor in a tour over the Catskills ; this is un- 

 derstood to be Mr. Eaton's opinion also. 



