BUILDING MATERIALS. 



85 



the Haverhill and Lisbon stones. Because the mortar is not a pure 

 white it has fallen into disuse, and the Maine or Vermont limes em- 

 ployed instead for finishing. Our stone would furnish good material for 

 three fourths of the plastering needed for houses, or it may be used for 

 agricultural purposes. As it is inexhaustible, there is no reason why the 

 farmers should not order it in large quantities. 



At Lime pond, in Columbia, the marl has been used to some extent for the manufac- 

 ture of quick lime. This article is fully equal to the best imported variety ; but the 

 supply is not inexhaustible. 



Limestone occurs in many other towns in New Hampshire, but in a comparatively 

 impure condition. It occurs in Plainfield, Cornish, Claremont, Clarkesville, Stewarts- 

 town, Amherst, Warner, Wakefield. I append a few analyses of some of these rocks, 

 by Dr. Jackson : 



Haverhill — first quality. . . . 

 Haverhill — second quality. . 



Thomas Priest, Lisbon 



David Priest, Lisbon 



Uriah Oakes, Lisbon — flux. 



Lyme 



Lyme — dark colored 



Orford 



Amherst 



Warner— white crystalline . 

 Warner — gray siliceous . . . . 

 Cornish — Judge Jackson . . . 



Lunenburg, Vt 



Plainfield 



Cornish — Johnson's quarry 



•5 

 3-8c 



8.2 



15-6 



20 



25-7 

 15 



64 



31 

 40.6 



59.6 



99-3 



90.66 



90- 18 



8i.6 



80 



71.7 



83.6 



90 



75.2 



56.4 



10 



58.6 



47 

 23.8 

 22.6 



1.6 

 6 



46.6 

 13.8 



3-8 



55-7 

 51-03 



45.6 

 43-9 

 40-35 

 47.04 

 50.66 

 42.32 

 31-74 

 5-62 

 32.98 



13-39 

 15.72 



= 100 

 = 100 

 =110.4 

 =98.6 



Brick Clay. 



A few facts have been acquired relative to the manufacture of bricks in the state. 

 They relate to the largest establishments. 



The extensive deposit of clay in Pembroke, Allenstown, and Hooksett, has been 

 described on page 94 of Part IIL The brick-makers find a slight difference between 

 the gray and blue clays, — the latter requiring more sand to be mixed with it, and 



