570 REPORT ON NATIONAL MUSEUM, 1886. 



Magnesian limestone. Blue-gray; line; compact. Kingston, Ulster County. 



Quarry of Noon & Madden. Tenth Census, 1880. 20617. 

 Dolomite. Upper Silurian; dark drab; fine; compact. Rochester, Monroe County, 



J. B. Tike's quarry. Tenth Census, 1880. 2(3454. 

 Calcareous dolomite. Upper Silurian; drab; finely fossiliferous. Lockport, Ni- 

 agara County. R. & J. Carpenters quarry. Tenth Census, 1880. 26513. 

 Biotite granite. Fine ; light gray. Garrison, Putnam County. A. C. King's quarry. 



A. C. King, 1883. 27531. 

 Hornblende mica granite. Coarse ; bright red. Grindstone Island, Jefferson 

 County. R. Forsyth's quarry. Tenth Census, 1880. 27024. 



Note. — Two large beautiful pillars of this stone are in the senate cham- 

 ber of the capitol building at Albany, N. Y. 

 Hornblende gneiss. Medium ; dark gray. Glenville, near Tarrytown, Westchester 



County. Sackett's quarry. Tenth Census, 1880. 26455. 

 Biotite gneiss. Medium; banded gray and white. Near Hastings, Westchester 



County. Quarry of Munson & Co. Tenth Census, 1880. 26521. 

 Gneiss. Coarse; greenish gray. Suffern, Rockland County. Copeland quarry. 



Tenth Census, 1880. 27050. 

 Norite. Coarse; dark greenish gray, with blue irridescent spots. Quarries of the 

 Au Sable Granite Company, Keeseville. C. D. Walcott, 1887. 38740. 



This stone, which is known commercially as "Au Sable granite," con- 

 sists essentially of the mineral labradorite and hypersthene. When polished 

 the bluish iridescence from the labradorite is very noticeable. It is a 

 beautiful stone for polished columns and pilasters. 

 Sandstone. Devonian ; brown ; very tine and compact. Roxbury, Delaware County. 

 Quarry of Robinson & Soop. Tenth Census, 1^80. 25626. 



Devonian ; brown; very fine and compact. Roxbury, Delaware County. ]». B. 



Boughtou's quarry. Tenth Census, 1880. 25627. 



Devonian ; gray ; fine and compact. Margarettville, Delaware County. Quarry 



of Grant Bros. Tenth Census, 1880. 25628. 



Devonian; two specimens; brownish-gray and olive-tinted ; tine and compact. 



Phoenicia, Ulster County. J. L. McGrath's quarry. Tenth Census, 1880. 

 25638. 



Devonian; brownish gray ; fine and compact. Snider Hollow, Ulster County. 



Quarry of Jamieson Bros. Tenth Census, 1880. 25639. 



Devonian ; dark blue-gr , fine and compact. Phoenicia, Ulster County. 



Quarry of Delemater <Sl Bouse. Tenth Census, 1880. 25640. 



Devonian ; dark blue-gray ; fine and compact. Phoenicia, Ulster County. J. 



McGrath's quarry. Tenth Census, 1880. 25641. 



Devonian: dark blue-gray; fine and compact. Cold Brook Hollow, Ulster 



County. Quarry of Lane & Co. Tenth Census, 1880. 25670. 



Devonian ; dark blue-gray ; fine and compact. Near Boiceville, Ulster Conuty. 



Quarry of Hewitt Boice. Tenth Census, 1880. 25671. 



Devoniau ; dark blue-gray ; fine and compact. Broadhead's Bridge, Ulster 



County. Quarry of Cornish & Ro we. Tenth Census, 1880. 25672. 



Devonian; dark blue-gray; fine and compact. Broadhead's Bridge, Ulster 



County. Quarry of W. Davis. Tenth Census, 1880. 25673. 

 Devonian ; dark blue-gray ; fine and compact. Broadhead's Bridge, Ulster 



County. Quarry of Hemgerfoid & Boice. Tenth Census, 1880. 25674. 

 Devonian; dark bine-gray; fine and compact. Stony Hollow, Ulster County. 



Sweeney's quarry. Teuth Census, 1880. 25704. 



