16G Remarks on the Lead Veins of Massachusetts, 



torted debris of land and aquatic, vegetables mixed with 

 earth and sand, and have evidently been swept over the 

 coal ; the matrix in which these have been found is a pale 

 coloured coarse sandy schist, becoming red in the tire. 

 Respectfully, your obedient servant, 



ZAC. CIST. 

 Professor Silliman, ) 

 New Haven, Connecticut, j 



2. Remarks on the lead veins of Massachusetts, ^c. m a letter 

 addressed to the Editor. 



Yale College, July 15, 1824. 

 Professor Silliman, 



In September last, I spent considerable time in the 

 vicinity of the lead mines, in Southampton, Mass. Accord- 

 ing to Mr. Hitchc )ck and Professor Eaton, veins from these 

 mines, after appearing in the primitive rocks at Whately, 

 passing under the bed of Connecticut river, the alluvial de- 

 posites of Sunderland, and the secondary formations of Mount 

 Toby, ara seen again — precisely where we should expect to 

 find them — in the granite and quartz of Leverett. Though 

 1 have no doubt that this is a correct statement of the case, 

 yet from some discoveries made in VVilliamsburgh by a 

 Mr. Nash, it would seem that the lead connected with the 

 Southampton mines is more extensively distributed in that 

 region, than has been supposed. It was found at Williams- 

 burgh in June, and the specimens I have obtained were in 

 quartz, and associated with pyritous copper, though the latter 

 is here by no means so abundant as at the locality on the 

 farm of Mr Field, in Leverett. For a while, very sanguine 

 hopes were entertained with regard to the Williamsburgh 

 vein, and it is probable that future research will prove it to be a 

 valuable one: — owmg, however, to the hardness of the rock, 

 few attempts have have yet been made to penetrate far into 

 its interior. Is this one of the veins of Mr. Hitchcock and 

 Professor Eaton ? After proceeding in a northerly direction 

 from Southampton, would it, at the northeast corner of Wil- 

 liamsburgh form a right angle, and go directly east, to Lever- 

 ett ? Or, are this and the Whately vein not identified ? A 

 more critical examination of the towns in Hampshire and 



