235 



Prof. Rogers announced that the sections of the act of the 

 Legislature granting lands on the Back Bay to the Society,^ 

 in common with the Institute of Technology, which necessi- 

 tated a payment of money to the State upon certain condi- 

 tions relative to the sale of the surrounding land, had been 

 rejDealed by the jDresent Legislature. Prof Rogers was ap- 

 pointed a committee to act in behalf of the Society in any 

 formalities which might be necessary for the ratification of 

 the act repealing said conditions. 



The following gentlemen were elected Corresponding- 

 Members : — 



Dr. Wm. O. Ayres, of San Francisco, Cal. ; Capt. IST. E. 

 Atwood, of Provincetown, Mass. ; Prof Edward Tuckerman, 

 of Amherst, Mass. ; Prof. Daniel Wilson, LL. D., of To- 

 ronto, C. W. 



June 3, 1863. 

 The President in the chair. 

 The following paper was presented : — 



The Penokie Mineral Eange, Wisconsin. By Charles 

 Whittlesy, of Cleveland, Ohio. 



The copper-bearing strata of Pt. Kewenaw (Lake Superior) extend 

 south-westerly across the boundary of the State of Michigan into Wis- 

 consin. These strata constitute a long, narrow and bold mountain 

 range from Copper Harbor to Long Lake, a distance of one hundred 

 and sixty miles. There are no stratigraphical breaks along this line, 

 the order of the rock being everywhere the same. The dip of the 

 beds is always northerly or northwest, and the strike to the northeast 

 or east, the general line of outcrop being northeast by east. On Point 

 Kewenaw, and as far southwest as the Akogebe Lake, on the west 

 fork of the Ontonagon River, the copper veins have been found 

 valuable. 



Beyond the waters of the Ontonagon, in the same direction, veins 

 have been discovered, but after limited workings have been aban- 

 doned. The Montreal River forms the boundary between MicTiigan 

 and Wisconsin ; and as early as the year 1845 mining locations were 

 made on its waters where they pass the range. Locations were also 



