Moraines with Raised Beaches of Lake Erie. . 3 
uncertainty concerning the portion east from Sheridan, owing 
to the fact that the ground has been but partially examined, 
and also because the beach phenomena are in places somewhat 
obscure. From Hamburg eastward the absence of this beach 
is a matter of concurrent observation by Mr. Gilbert and the 
writer. 
ee ZzzZ 
ZZ 
FS SS 
Z ares <= : : e : 8 i 
Y~ .f Wamestown 7 387 SON 
ZC in ea kU STorbert. \ S| 
30" 
Fig. 1.—MapP OF WESTERN New YORK, BY FRANK LEVERETT. 
Explanation of Map.—The shaded portions represent moraines. Their map- 
ping is incomplete east from the Genesee valley and interrogation points there 
mark the lines of continuation. The glacial boundary, indicated by a series of 
broken lines and dots, here reaches its most northern point between the Atlantic 
Ocean and the great plains west of the Missouri river. Strie are represented by 
arrows. The raised beaches are indicated by continuous lines. A series of 
broken lines are introduced, in the district between Sheridan and Hamburg, 
where it is thought that the Sheridan beach may have a continuation. Drumlins 
are represented by elongated ovals, which indicate their trend. Hskers are repre- 
sented by straight lines which also indicate their trend. These should be distin- 
guished from strize by the absence of an arrow head. They are numerous in the 
vicinity of the bend of Oak Orchard creek in southwestern Orleans county, as 
indicated in the text. 
From Sheridan, New York, westward to Cleveland, Ohio, 
the Sheridan beach lies but a short distance south from the 
