NEW YORK 419 



Photographed by H. L. Fairchild, Rochester, New York 

 6| by 82 inches 



801. Lower Clinton limestone, with iron ore, ravine of the Genesee. 



Photographed by W. H. Pynchon, Hartford, Connecticut 

 4 by 5 inches 



802. Old shoreline of lake Ontario, near Rose village, New York, about 3 miles 



south of Sodus bay (No. 11). 



803. Contact of Calciferous on fundamental gneiss ; Little falls of the Mohawk, 



New York. The locality is on a cut of the West Shore railroad. Close 

 upon the gneiss is a thin layer of conglomerate, considered to belong to 

 the Calciferous (No. 9). 



804. High falls of Genesee river at Rochester, New York. The lower fall (in the 



foreground) is determined by the Medina sandstone, the one next above 

 by the limestone of the Clinton (No. 12). 



Photographed by C. D. Walcott 

 6J by 8| inches. Negatives in United States Geological Survey 



805. Middle quarry of the Penrhyn Slate Company, Middle Granville, Washington 



county, New York. Illustration of the bedding of the roofing slate. It 

 is coincident with the line of cleavage (No. 97). 



806. Same as 805 ; the light-colored stratum is a brecciated limestone conglom- 



erate in a massive laj^er coincident with the cleavage of the roofing slate ; 

 northern and eastern sides of quarry (No. 99). 



807. Same as 806 (No. 100). 



808. Sandstone in Hudson shales, town of Argyle, Washington county, New 



York (No. 104). 



809. Cliffs in Topmans gulf, Jefferson county, New York. Lorraine rocks ; Utica 



shale with interbedded sandstone of the Lorraine series coming in above 

 (No. 46). 



810. Illustration of the decay of the upper semi-crystalline beds of the Trenton 



limestone at Rusts quarry, on east bank of West Canada creek, above 

 Trenton Falls, New York (No. 113). 



811. Cut in drift about one mile northwest of Gravesville, Herkimer county, 



New York (No. 118). 



812. Distant view of "High falls," at Trenton Falls, New York (No. 112). 



813. Boulder imbedded in crystalline Algonkian limestone, one mile north of 



Fort Ann, Washington county, New York, on roadside to Comstocks 

 (No. 93). 



814. Large boulder in crystalline Algonkian limestone, one mile north of Fort 



Ann, on roadside to Comstocks, Washington county, New York (No. 92). 



815. Interior of Dixon plumbago mine, four miles west of Hague, Warren county, 



New York (No. 53). 



816. Exterior view of Dixon plumbago mine, four miles west of Hague, Warren 



county, New York (No. 54). 



