134 PROCEEDINGS OF WASHINGTON MEETING. 



Vice-President Chaniberlin resumed the chair, and the following paper 

 was read : 



ON THE NORTHWARD AND EASTWARD EXTENSION OF PRE-PLEISTOCENE 

 GRAVELS IN THE BASIN OF THE MISSISSIPPI. 



BY R. D. SALISBURY. 



A second paper was read by the same author: 



ON CERTAIN EXTRA-MORAINIC DRIFT PHENOMENA OF NEW JERSEY. 



BY R. D. SALISBURY. 



The two papers by Professor Salisbury (printed on other pages) were 

 discussed by C. R. Van Hise, Frank Leverett, E. W. Hilgard, N. H. 

 Winchell, F. J. H. Merrill, T. C. Chaniberlin, and the author. 



The next paper was on — 



INEQUALITY OF DISTRIBUTION OF THE ENGLACIAL DRIFT. 



BY WARREN UPHAM. 



Contents. 



Discrimination of Subglacial and Englacial Drift page 134 



Deposition of the Englacial Drift during the Departure of the Ice-sheet 137 



Tracts of abundant Englacial Drift 139 



New England 139 



New York 140 



Minnesota 140 



Manitoba 141 



Tracts of scanty Englacial Drift Ill 



New England Ill 



New York 142 



Minnesota 142 



North of Rainy Lake and the Lake of the Woods I I- 



Relationship-of the Englacial Drift to the Terminal Moraines 143 



Forms in which the Englacial Drift was deposited 144 



Forms of Drift HI 



Englacial Till 145 



Perched Blocks L45 



Kames 145 



Osars or Esk'ers 14G 



Valley Drift 146 



Loess 146 



Deltas L46 



Influence of adjoining Lakes or the S ■ a 117 



Discrimination of Subglacial and Englacial Drift. 



The various drift deposits which are left to us as the record of the Glacial period 

 give far mitre information of the wane and departure of the last ice-sheet than of 

 its accumulation and stages of advance to its maximum area and depth. Thus we 

 fail to discover the beginning and successive limits of increase of the ice-sheet 



