434 NEW YORK STATE MUSEUM 



keepsie bridge ; part of the anchorage and piers ©f the ISfew 

 York and Brooklyn bridge ; locks atCohoes and Waterford, and St- 

 Patrick's Roman Catholic Church in Newburgh are examples of 

 the Kingston limestones. These quarries are not worked con- 

 tinuously. 



Greenport, Columbia County. — The quarries near Hudson in 

 the town of Greenport are opened on the north end, and in the 

 western escarpment of Becraft's mountain. Geologically they 

 are in the Upper Pentamerus and Encrinal limestone divisions of 

 the Lower Helderberg horizon and the stone is a nearly pure car- 

 bonate of lime. It is gray to reddish gray in color, sub-crystal- 

 line to crystalline and highly fossiliferous. The beds are from 

 four inches to six feet thick, and afford blocks of large size. The 

 stone is susceptible of a high polish, and is adapted to decorative 

 purposes, preferable for interior work. It has been known as 

 " coral-shell marble " and " scutella marble." Nearly all of the 

 foundations and retaining walls in the city of Hudson are of this 

 store. The Presbyterian church is a good architectural- example 

 of its use. The quarries of F. W. Jones are worked continuously 

 and the railroad connects them with the Mew York Central and 

 Hudson Eiver railroad and the river. 



Champlain Valley. 



Saratoga Springs, Saratoga County.— Blue limestone for 

 common masonry has been quarried at several places in the 

 town. 



The largest quarries are those of Charles G. Slade and Isaac F. 

 Wager, about three miles west of the village. The geological 

 horizon is Calciferous and Trenton. 



The stone is of a dark-blue shade. That of the thick beds is 

 rather easily dressed and is worked up into dimension blocks for 

 curbing, and house-trimming and heavy bridge work on the 

 Delaware and Hudson Canal Co.'s railroad lines. It has to be 

 carted to Saratoga, where a large part of the total output is used 

 in house-work. 



Sandy Hill, Warren County. — The Sandy Hill Quarry Com- 

 pany has extensive quarries two miles from the Sandy Hill rail- 

 road station, and a half mile northeast of the canal. 



