Limestones. 105 



South of Plattsburgh, three and a half miles, Peter Lezotte quar- 

 ries a gray limestone on lands of the Burlington Manufacturing Com- 

 pany. There are two openings between the D. & H. R. R. and the 

 lake shore road. The northern opening is 160 yards long, from 

 north to south, and 30 yards wide. The depth of stone does not 

 exceed 15 feet.- The beds dip a few degrees easterly. One system 

 of joints runs south 10° east, vertically, and is open. Another, not 

 so plain, is nearly at right angles to the first set. There is one der- 

 rick at this quarry. The southern opening has the rock covered by 

 drift earth to a depth of one to three feet. The upper surface is 

 glaciated and solid. The stone is fine-crystalline in texture, and gray 

 to red in color. The dip here is a few degrees to the eastward. The 

 joints are vertical and at convenient distances apart for getting out 

 large blocks. The beds are from three to six feet thick. The depth 

 of this opening is 15 feet. Its approximate dimensions are 80 x 30 

 feet. The stone is considered superior to that on the north, being 

 more solid. A derrick, a steam pump and one channelling machine 

 are in use. Blocks wei^hino- 17 tons have been taken out of this 

 quarry, and shipped. It is all carted by teams to the lake shore, one 

 mile south-east of the quarry. The principal markets are Platts- 

 burgh and Burlington, Vermont. The first opening was made about 

 fifteen years ago. This stone dresses easily and takes a high polish, 

 and is known in the market as " Lepanto marble." 



Hoffman's Ferry, Schenectady County. — There are two quar- 

 ries in the town of Rotterdam, Schenectady county, near Patterson- 

 ville station, which are worked at intervals. They are opened in the 

 limestone on the hill, 200 feet above the Mohawk river, and a half a 

 mile south of Pattersonville station (West Shore railroad) and the 

 Erie canal. That of James Walker was opened a few years ago, 

 when the New York, West Shore and Buffalo railroad was built. 

 The face has a south 55° east course and a length of 150 yards, 

 and has been worked back 75 feet from north to south. There is 

 from 1 to 4 feet of gravelly, drift earth on the stone. Then the beds 

 which are quarried range from 4 to 18 inches in thickness, and the 

 total thickness of quarry beds is from ten to fifteen feet. At the west end 

 there are two beds, each two feet thick, of gray, semi-crystalline lime- 

 stone. The dip is to the south-south-east at a small angle. The main 

 joint system runs vertically south-east. The drainage is natural 

 One horse-power derrick in the quarry serves for loading on wagons, 



