1903-4. | A FortTy-MILE SECTION OF PLEISTOCENE DEPOSITS. 21 
sands, will mark the position of the ice front at a time when interglacial 
beds of the equivalent time-interval were being deposited west of this 
at Scarboro and elsewhere. 
The arenaceous substratified portions of the uppermost sheet of till 
differ greatly from the till of the second glacial epoch at Scarboro, but 
are similar to portions of the highest till sheets of that locality. In the 
’ more hurried examination of the entire one hundred miles of sections, 
made by the writer three years ago, these two till sheets were regarded 
as probably contemporaneous. The subsequent more detailed study 
has cast some doubt on this provisional classification. It seems advis- 
able, however, to postpone further discussion until the study of the 
intervening section, now under way, has been completed. 
* 
