MEETING, MONDAY, APRIL 3. 71 



whaling voyage from New Bedford, of some two years 

 duration, were vigorously presented. 



Eegular Meeting, Monday, April 3, 1882. 



Meeting this evening. President in the chair. Rec- 

 ords read. 



Prof. G. F. Wright, ofOberlin, Ohio, gave an account 

 of the discoveries made in Pennsylvania last summer by 

 him and Prof. H. C. Lewis concerning the southern limits 

 of ice-action (otherwise called the terminal moraine) 

 during the glacial age. These investigations were made 

 under the direction of Prof. Lesley, who has charge of 

 the elaborate geological survey now in progress in that 

 state. 



Previously to last summer, Clarence King had first, 

 in 1876, through a paper of Mr. Wright's before the Bos- 

 ton Society of Natural History (see Proceedings, Vol. 

 XIX, pp. 60-63), called attention to the terminal mo- 

 raine at Wood's Hole. Subsequently, Warren Upham, 

 taking up the clew, had followed it through Cape Cod 

 and Long Island, where the line joined on to that dis- 

 covered by Prof. Cook of New Jersey, reaching the sea 

 at Perth Amboy just below New York, and crossing the 

 Delaware river at Belvidere, a little above Easton, Penn- 

 sylvania. From this point the line of the terminal mo- 

 raine was seen laid down upon a map fifteen by ten feet, 

 displayed for the first time to a scientific society, crossing 

 Northampton county by a general northwestern course to 

 the centre of Monroe county ; thence westward crossing 

 the Lehigh fifteen miles above Mauch Chunk, and the 

 Susquehanna twenty miles below Wilkesbarre ; thence by 



