BUILDING MATERIALS. 83 
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 limie 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. 
Orford 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 
