METALS AND THEIR ORES. 5/ 



hauling, So. 50; breaking, $0.50. Tlie average product of cast-iron was 60 per cent, 

 on the ore smelted, being a loss of 9 per cent. Jackson's assay was the following : 

 magnetic oxide, 96.20, silica, 2.30, titanic acid, 1.50^100. Metallic iron, 69.04. Ten 

 miners were employed at the rate of $15 per month. The pig sold in 1S40 at the 

 furnace for 2 cts. per lb., castings at 5 cts. per lb., and bar iron at 5i cts. At the 

 furnace 100 laborers were employed for si.\; 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 clay the mining could be effected more cheaply than in 

 1S40. 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 Ore 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 of a 

 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 



