430 NEW YORK STATE MUSEUM 



30.68 per cent of lime, and 2<>.77 per cent, of magnesia, and 0.91 

 per cent, of insoluble matter. The specific gravity was 2.868, 

 equivalent to 178 pounds per cubic foot. The absorption test 

 indicated 0.14 per cent, of water absorbed. The loss in weight 

 when acted upon by sulphuric acid gas amounted to 0.25 per 

 cent. Freezing and thawing produced no apparent change. At 

 a high temperature the specimen was calcined and crumbled at 

 the touch. The Tuckahoe quarries have been worked since 

 1820, and have produced a large aggregate of marble, which has 

 been put in large and expensive buildings in cities along the 

 Atlantic coast from Boston to New Orleans. It is comparatively 

 durable and resists the action of the weather better than much 

 of the Vermont and the foreign marbles, which have been used 

 in New York city. A noticeable change from long exposure is 

 a slight yellowish shade of color, which can be seen in the United 

 States Assay Office building, Wall street, in the building of the 

 National Shoe and Leather Bank, and in the houses of the cardi- 

 nal and of the archbishop on Madison avenue. Some of the more 

 prominent structures in which Tuckahoe marble has been used 

 are the following : The United States Post-Office, United States 

 Naval Observatory and the Soldiers' Home, Washington, D. C; 

 the City Hall, Brooklyn ; the A. T. Stewart buildings on Broad- 

 way and Fifth avenue, New York, and the Sears building, 

 Yendome Hotel and Revere Bank in Boston. 



Pleasantville, Westchester County. — The Snowflake Marble 

 Company's quarry is one mile southeast of the village of Pleas- 

 antville. This marble is white and very coarse-crystalline. It 

 is much harder than the Yermont marbles and does not compete 

 with them for monumental work. The chemical analysis shows 

 it to be a dolomitic limestone or marble. Examples of its use 

 are : St. Patrick's Roman Catholic Cathedral, Fifth avenue, and 

 the Union Dime Savings building, Sixth avenue and Thirty- 

 second street, New York city ; also the Methodist Episcopal 

 church in Sing Sing. 



Hastings, Westchester County. — The marble quarries near 

 Hastings produce a white, fine-crystalline, dolomitic stone. They 

 have been idle for many years. 



