82 ECONOMIC GEOLOGY. 
abundance of this mineral discouraged the proprietors, preventing the 
carrying on of a large business. 
In East Lebanon a company has expended $25,000 upon opening a quarry and erect- 
ing a mill, but the work is now abandoned. The property consists of 100 acres of land, 
about 100 rods in length, along the course of the slate, with a fine water-power,—the 
Mascomy river,—and situated by the track of the Northern Railroad. Over $4,000 has 
been spent in opening the quarry, under the superintendence of E. L. Cleaveland, pre- 
senting a vertical face about 55 feet broad and deep. I saw slabs 15 feet square, and 
others, larger, can be obtained. The valuable part of the bed is 30 feet in width. The 
mill on the Mascomy is 44 feet wide, 65 feet long, and three stories high. It contains 
machinery driven by water-power, put in at an expense of $8,000, requiring the services 
of 20 workmen when fully equipped. The slate is not used for roofing, as it does not 
split sufficiently thin, but may be used for the manufacture of chimney pieces, table- 
tops, shelves, etc., and marbleized like the slate of western Vermont, where this busi- 
ness has been successfully conducted for many years. The other uses of the stone are 
for sinks, cisterns, burial cases, flooring, tiling, etc. ; and the waste is ground and bolted 
into slate flour, of which the company sold 150 tons in 1868. In continuing the quarry- 
ing, some difficulties arose requiring a further outlay of capital, insomuch that the 
company became discouraged and suspended operations, the superintendent having 
accepted a position at the Copperas Hill establishment at. Strafford, Vt. 
Other openings have been made upon Moose mountain, Hanover, and Croydon 
mountain in Cornish. 
Flags. Such slates and schists as are suitable for flagstones are chiefly what have 
been described under the Cambrian and Cois schists of the Connecticut valley. They 
are all comparatively soft, and will not compare for durability with the blue stone from 
Hudson river, which is used so commonly in the larger towns of lower New England. 
All stones of this sort that have been quarried in our state are only used locally. 
LIMESTONE. 
Haverhill, In the east part of Haverhill is a large bed of grayish- 
white limestone situated in gneiss, It is about a mile and a half from 
the East Haverhill station, on the Boston, Concord & Montreal Railroad. 
There are several openings in the bed. The rock is partly bluish-gray, 
resembling that wrought at Thomaston, Maine, and partly white and 
coarsely crystalline. It has been seen for 800 feet in length and 400 in 
width. Dr. Hayes’s analysis of it is the following: Carbonate of lime, 
94.04; carbonate of magnesia, 1.36; carbonate of iron, .58; phosphate of 
lime, .22; quartz, silica and mica, 3.80=100. ‘This sample was varie- 
gated gray in color, and contained the quartz, silica and mica as rock 
