Limestones. 99 



quarry. A face 400 feet in length and 20 feet in height shows the 

 stratification finely. The beds are thin, and there is some black shale 

 interstratified with the limestone, and the formation is of the Trenton 

 age. This quarry is worked mostly for lime manufacture. 



Isaac Wager's quarry is one-third of a mile east of Rowland's 

 Mills, and on the north side of the stream. Here also the beds of 

 limestone dip a few degrees, and to the south-south-east. The cov- 

 ering on the stone is a clay-loam and "hard pan," which varies in 

 thickness from two to seven feet. Then follows the limestone, in beds 

 from 8 to 20 inches thick, for a total thickness of eight feet. The 

 quarrying work moves northward and up the dip plane. Only a few 

 men are emplo3*ed, and the stone is drawn by teams to Ballston and 

 to Saratoga. It is sold mostly as cut or dressed stone, and for house 

 trimmings and for curbing. It can be seen in the Lathrop houses in 

 Saratoga and in the Wiley building in Ballston. 



The quarry worked by Jas. Lee is about 300 yards east-north-east 

 of that of Wager and within a quarter of a mile of that of Slade. 

 It is a small opening and is worked at irregular periods to suit de- 

 mand. A thin covering of sandy loam here lies on the rock. 



Sandy Hill, Washington County. — The Sandy Hill Quarry 

 Company's quarries are about two miles from the Sandy Hill railroad 

 station, and a half a mile north-east of the canal. The oldest open- 

 ings are south of the present working site, and several acres have been 

 uncovered and excavated, but only to the depth of one or two beds 

 of stone. The main quarry is on the north-west slope of the hill, and 

 north of the old workings. The stripping on the rock is light, usually 

 not more than one to two feet of earth. The uncovered surfaces show 

 deep, parallel joints or seams filled with earth. These joints, which are 

 thus filled with dirt, run to the bottom of the quarry and through the 

 beds. Their course is south 65° west, and their dip is nearly verti- 

 cal to the south-south-east. The other joints are vertical. As these 

 seams are quite close together, the rock is well divided into blocks of 

 convenient size for handling. The beds are from one to seven feet 

 thick, and show a dip of less than 5° south. The thickest course, 

 near the bottom is seven feet. The length of the present working 

 face from north-east to south-west is at least a quarter mile ; the ex- 

 treme breadth of the belt quarried over is not less than 100 yards, 

 and the w T hole depth of quarry beds is 30 feet. The bottom rock is 

 workable stone, and at least 40 feet could be quarried, if the stone 



