624 RECORD OF MEETINGS OF THE 



The candidates were unanimously elected by vote of the 

 Academy. 



The meeting then adjourned. 



Hermon C. Bumpus, 



Recording Secretary. 



SECTION OF GEOLOGY AND MINERALOGY. 

 December 4, 1905. 



Section met at 8.30 p.m., Vice-President Hovey presiding. 

 The minutes of the last meeting of the Section were read 

 and approved. 



The following program was then offered : 



J. Howard Wilson, The Glacial Geology of Nantucket and 

 Cape Cod. 



Thomas T. Read, Gold Mining in the Southern Appala- 

 chians. 



George F. Kunz, Description of the Modoc, Scott County, 

 Kansas, Meteorite. 



Summary of Papers. 



Dr. Wilson commenced his paper with a description of the 

 region by means of a map showing the great morainal features 

 of the late Wisconsin ice-sheet. It was shown that the glacial 

 phenomena and accumulations were due to two very distinct 

 lobes having a direction of motion approximately at right 

 angles to each other. The eastern lobe was termed the Nan- 

 tucket lobe and the other the Long Island lobe from the more 

 prominent region of its moraines. 



It was shown also that each lobe had two prominent associ- 

 ated stages, one the time of maximum advance, and the other a 

 period of halting in the final retreat. 



The glacial features of Nantucket and as far west as the 

 central portion of Martha's Vineyard were formed during the 

 first or Nantucket stage of that lobe, while the morainal accumu- 

 lations of the western portion of Martha's Vineyard, Block 

 Island, and the outer moraine of Long Island were formed 



