88 ECONOMIC GEOLOGY. 



In Canterbury, this rock has been quarried near the Boston, Concord, 

 & Montreal Railroad, a mile and a half south of the station. A hasty run 

 over the ground showed the presence of two beds, each about 25 feet 

 wide, separated by hornblendic rocks. One bed has been opened in two 

 places. I have been unable to learn anything about the history of the 

 work done here, and do not know why the quarry has been abandoned. 

 It is very near a railroad, and conveniently situated for working. The 

 stone is only partially like that from Francestown, occurring more like 

 those in Vermont. 



Circumstances have iDrevented such exploration of the country between Francestown 

 and Canterbury as was anticipated. I have one impression of the relations of rocks to 

 the soapstone that may be of value to others. The Canterbury bed lies just above a 

 prominent belt of white feldspathic or granitic material. This may therefore be the 

 guide to the occurrence of the soapstone. I have observed it in the west part of New 

 Boston, and in Hopkinton. (See Vol. II, pp. 5S9, 159.) 



Other localities of soapstone, of greater or less interest, are in Richmond, on land of 

 Lorenzo Harris ; boulders in Hampstead, Pelham, and Dracut, Mass. ; and ih miles east 

 of E. Hill's in Swanzey. This last named bed has not been mentioned heretofore, and 

 is not located upon the map. I have no facts in regard to it to present. 



Orford. Five beds of soapstone occur in this town, one in the Huronian, the others 

 in the Coos mica schists. They are all of good quality. Some facts about them are 

 found on pp. 382-4, in Volume II. 



Haverhill. The soapstone quarry in Haverhill, now controlled by David Page, is 

 situated about three miles north-east of North Haverhill station. It was first opened 

 in 1855, and was worked up to the middle of the winter of 1857. About 150 tons were 

 taken out and sent to market. The stone was pronounced to be of a fine quality for 

 the first opening. The quarry then changed owners, and was not worked again until 

 1874, when some 50 or 60 tons of the stone were taken to market, and found to be of 

 very good quality for all purposes for which soapstone is used. It is claimed that it 

 can be brought to a finer edge than that from any other locality in the United States. 

 It can be quarried in large quantities, and of almost any dimensions. The Boston, 

 Concord & Montreal Railroad is i^ miles distant. 



Manufacture of Glass and Pottery. 



E.xcellent materials for the manufacture of glass and pottery are abun- 

 dant. The feldspar occurs in the coarse granite veins carrying merchant- 

 able mica. This range has been described in Volume II, page 514, ex- 

 tending from Easton to Surry, being of a fibrolite mica schist, and is 



