Southampton Level. 131 



790 feet. The same fine-grained granite is continued, 

 occasionally traversed by veins lined with crystals of quartz ; 

 but containing no other minerals. 



774 feet. A narrow vein of sulphuret of lead, with walls 

 lined with crystals of quartz. The fairest cubic crystals are 

 slightly attached to the points of the quartz crystals. Yel- 

 lowish crystals of carbonate of lime are often interspersed 

 among the lead. Sulphate of barytes occurs here also ; some- 

 times in plates meeting at various angles, and forming cham- 

 bers lined with minute crystals of quartz. Minute crystals of 

 copper pyrites and a little fluate of lime have been found 

 here ; also fine specimens of bitter spar. The walls are very 

 compact, fine-grained granite. 



760 feet. Coarse, parti-coloured granite. The felspar is 

 flesh-coloured and white ; the quartz often bluish or greenish ; 

 the mica silvery, greenish, or purplish. 



725 feet. A stratum of gray-wacke slate. Texture less 

 firm than of the same rock at the west of Pittsfield. This 

 stratum is very distinct, and about two feet thick. 



723 feet. A stratum of serpentine rock, containing very 

 red quartz imbedded in various directions. It is very compact, 

 and mostly green. Here it is but about three feet thick. 

 About ten miles south of this place, on Maclure's Springfield 

 section, near the line between Westfield and Russel,. and 

 four miles west from Westfield Academy, I found this same 

 stratum of very great breadth. I say the same stratum, 

 because it is situated in the granitic hill, east of the highest 

 ridge of granite, which is evidently a continuation of this 

 range. Perhaps I may, hereafter, give you an account of 

 my excursion along that section of Maclure, in which I may 

 give you a more particular description of the Westfield ser- 

 pentine. 



720 feet. Coarse granite, with white and flesh-coloured 

 felspar, black and silvery mica. 



700 feet. A stratum of red mica slate, about four feet 

 thick. 



Vol. I. ...No. 2. 13 



