Freestone (sandstone), from Albert, Dorchester, and Weston, N. B.
Brownstone, from Belleville and the base of the Palisades, N. J.
Bluestone and "mountain graywacke," from the Hudson River.
Limestone, from Mott Haven and Greenwich, Conn.
Granyte, from Radcliffe's Island, etc., Me.
Gneiss, from New York, Westchester, and Kings counties, N. Y.
Marble, from Westchester county, N. Y.
The fortifications in the harbor and entrance to the sound, constructed of granyte from Dix Island, Spruce Head, etc., Me., gneiss from the vicinity, brownstone from Conn., etc.
The stonework of the New York and Brooklyn Bridge, as I am kindly informed by Mr. F. Collingwood, the engineer in charge of the New York approach, is constructed of the following materials:
Granyte, from Frankfort, Spruce Head, Hurricane Island, East Blue Hill and Mt. Desert, Me., Concord, N. H., Cape Ann, Mass., Westerly, R. I., Stony Creek, Conn., and Charlottesburg, N. J.