METALS AND THEIR ORES. 57 
hauling, $0.50; breaking, $0.50. The average product of cast-iron was 60 per cent. 
on the ore smelted, being a loss of g per cent. Jackson’s assay was the following: 
magnetic oxide, 96.20, silica, 2.30, titanic acid, 1.50100. Metallic iron, 69.04. Ten 
miners were employed at the rate of $15 per month. The pig sold in 1840 at the 
furnace for 2 cts. per lb., castings at § cts. per lb., and bar iron at 54 cts. At the 
furnace 100 laborers were employed for six months, and half of them for the balance 
of the year. The furnace buildings and the miners’ houses are still standing. From 
a detailed statement of the superintendent, the operations for 1838 showed an expendi- 
ture of $14,128.63; sale of pig and scrap, $14,594.98; sale of castings $7,309.12,— 
total, $21,904.10. Excess of receipts over expenditures, $7,775.47. 
At the present day the mining could be effected more cheaply than in 
1840. A miner living at Sugar Hill assured me of his ability to con- 
tract for the delivery of ore at the surface for $2 per ton, provided means 
were taken to drain the excavation. His plan was to open the vein so 
low down that the water would make no trouble. 
Dr. Jackson mentions two other places in the state where the natural 
facilities for the manufacture of iron are as good as those at Lisbon, viz., 
at Bartlett and Piermont. The following sketch of the Bartlett locality 
is furnished by Mr. Huntington. The other statement is by a friend, 
who is well qualified to judge of the value of ore deposits. 
Iron Ort IN BARTLETT. 
A little south of west from the village of Jackson there is a high mountain ridge, 
the eastern extremity of which is known as Baldface. This ridge extends to the 
western slope of Mt. Crawford, but it is cut by the valley of Rocky Branch, and 
also by a stream, Razor Branch, in the western part of Bartlett. This ridge, for the 
most part, is a coarse granite, composed chiefly of feldspar and quartz, but it contains 
some mica, and generally manganese. In this granitic rock, in the northern part of 
the town of Bartlett and east of Rocky Branch, occurs the most extensive deposit of 
workable iron ore ever found in New Hampshire. 
In the ridges that project south from the ridge just mentioned the granite is ofa 
different texture, being more compact, and the feldspar, instead of being a light flesh- 
color, is a dull gray, and more distinctly crystalline. This rock forms the precipitous 
cliffs north of the road running from Jackson to Upper Bartlett. North of the granite 
containing the iron and forming the mountain south of the settlement in Jackson 
known as Green hill, the rock is a mica schist which passes into a quartzite. The 
schist dips N. 40° W. at an angle of 25°, and hence it rests upon the granite. On the 
eastern slope of the mountain is a schist entirely different from that which forms the 
VoL.v. 8 
