1903-4. | A Forty-MILE SECTION OF PLEISTOCENE Deposits. * 19 
The sands which occur between the two local till sheets (A and B 
above) are usually coarser than those of the first interglacial epoch, and 
they contain a few gravel beds. The series of cross-bedded sands of 
the second interglacial epoch, those overlying the second till sheet, are 
quite similar to those of the first epoch. The maximum thickness was 
found east of Port Granby to be fifty-six feet. This includes a few feet 
of stratified arenaceous clays found at the base of the section. 
In none of the stratified deposits could any fossils be found. 
In a few places, above the last till sheet, are a few feet of modern de- 
posits—sand blown from the face of the cliff and lodged just behind the 
edge by the eddying current which exists there when the wind blows 
towards the cliff front. In one locality these sands have a thickness of 
five feet. They do not extend more than one hundred and fifty yards 
back from the front of the cliff. 
Inland, north of the shore, there are stratified sands and gravels over- 
lying the last till sheet, but none of them happens to be exposed in the 
lake-shore sections. 
East of Port Hope, wherever stratified sands and gravels occur, they 
almost always are found to occupy the hollows between adjacent domes 
composed of the first till. Whether they belong to the first or second 
interglacial time interval it is impossible to say. As they are found, 
inland, to give place to till which presumably overlies them, and which 
probably represents the second till sheet, the inference is that they are 
contemporaneous with the sands of the first interglacial interval. West 
of Port Hope the sands are much thicker than elsewhere, and their 
position intermediate between the two till sheets is easily ascertained. 
After the deposition of the sands of the second interglacial epoch 
there seems to have been an interval of considerable duration in which 
erosive processes cut broad valleys in the earlier deposits. In the 
vicinity of Port Granby one of these valleys reached a width of over 
two miles. A second, whose approximate width has not been deter- 
mined, occurs in the vicinity of Newcastle. 
The till of the last sheet follows the contour of the underlying deposits 
upon which it was laid down after their partial erosion. At the eastern 
end of the Clarke section it is found to rest directly upon the till of the 
first epoch. Elsewhere it usually rests upon the stratified sands of the 
second interglacial epoch. The relation of this till to the underlying 
-sand deposits is in places very intricate (Plate II., Fig. 2). Sometimes 
