BUILDING MATERIALS. 8;^ 



mixture. It will afford 53.7 per cent, of lime, to which will be added 

 four parts only of earthy matter. Much of the lime in the market con- 

 tains 27 per cent, of earthy and foreign matter. Some samples I saw of 

 the limestone contained less earthy matter than the sample analyzed." 



In 1864 a pamphlet was prepared by Nicholas Mason, descriptive of 

 the properties and capabilities of this stone, from which it appears that 

 the entire cost of making the lime was 30 cents per cask. At Rockland, 

 Maine, the corresponding expense is given by Alden Ulmer, inspector, 

 at 80 cents per cask, 



Lisbon Limestone. In Lisbon lime is also manufactured by Orren 

 Bronson to the amount of 2,200 casks annually. The bed is shown on 

 the several maps to extend several miles through the eastern part of the 

 town, and to crop out on different stratigraphical lines. The thickness 

 is not so great as in Haverhill, but great enough to supply a kiln for 

 many years. Some parts of it were thought to approach 100 feet in thick- 

 ness. Four different quarries were wrought forty years since, consisting 

 of Mr. Bronson's, Thomas Priest's, David Priest's, and Uriah Oakes's, — 

 the others to the north-east of the first, and within four miles' distance. 

 The T. Priest bed is 13 feet wide; it has been explored for 300 feet in 

 length, and can be wrought to the depth of 60 feet without the necessity 

 of pumping. There is a slight curvature to the bed. As shown on the 

 map, the range continues to the furnace in Franconia, broken twice. The 

 opening north of Sugar hill supplied the furnace with material for fluxing 

 the iron ore. There is another range of limestone parallel with the Bron- 

 son-Oakes belt, about two miles to the north-west, following a back road 

 from Salmon Hole brook to the South Branch. Quartzite is associated 

 with it. 



Orfovd and Lyme. In Orford and Lyme is another development of 

 limestone identical in character and geological position with those of 

 Haverhill and Lisbon, and it is essentially continuous for 10 miles near 

 the west edge of the gneiss. On the west side of Cuba mountain a bed 

 has been wrought at intervals for fifty years. Some of the beds are 20 

 feet thick, and several run close together, as at Tillotson's quarry, where 

 the aggregate thickness of the limestone is 38 feet. I suppose there 

 must be beds of limestone upon Lime hill, though none are marked there 

 upon the map. On the Charles Scott place, in Lyme, are beds 6 feet in 



