30 NEW-YORK STATE COLLECTION. 



Names. Localities. 



50 Green slate. Cornwall, Orange. 



51 Green (calcareous) shale (with fossils, Nucula, etc.). Whitt's quarry. 



52 Siliceous black slate. Clermont, Columbia. 



53 Green siliceous slate. Montrose, Dutchess. 



54 Sandstone, slaty (slaty graywacke). Redhook. 



55 Shaly sandstone. Stockport, Columbia. 



56 Black slate. Hydepark, Dutchess. 



57 Sandstone (compact and partially altered). Bloomingrove, Orange. 



58 Siliceous slate. Cornwall, Orange. 



59 Sandstone (laminated and micaceous). Minisink, OraDge. 



60 Slate, black (thinly laminated). Clermont, Columbia. 



61 Slate, black (thinly laminated). Sugarloaf, Orange. 



62 Sandstone (laminated and micaceous). "VValden, Orange. 



63 Slaty sandstone (with mica and grains of anthracite). Walden. 



64 Flinty slate (black). Hudson, Columbia. 



65 Flinty slate (greenish). Hudson. 



66 Laminated sandstone. Schoharie. 



67 Gray sandstone. Banks of Hudson river, Dutchess. 



68 Black slate. Hillsdale, Columbia. 



69 Gray sandstone (siliceous and partially altered). Ghent, Columbia. 



70 Gray sandstone (conglomeritic). Banks of Hudson river, Dutchess. 



71 Gray sandstone (slightly conglomeritic and laminated). Hydepark 



landing, Dutchess. 



72 Siliceous slate (with copper and iron pyrites). Near Lower Redhook. 



73 Flinty slate. Near Hudson, Columbia. 



71 Brown jaspery slate. Near Kinderhook creek, Chatham, Columbia. 



75 Glazed slate. Near Rider's mills, Chatham. 



76 Glazed slate. South of Hudson, Columbia. 



77 Glazed slate, greenish (shining argillite). Rider's mills, Chatham. 



78 Siliceous and glazed slate (with limestone). Chatham. 



79 Quartz crystals, in cavities of cpiartz. Near Lansingburgh. 



80 Red slate. South of Hampton, Washington. 



81 Siliceous slate. Lower Redhook landing, Dutchess. 



