18 TRANSACTIONS OF THE CANADIAN INSTITUTE. [VoL. VIII. 
bands, varying in thickness from a few inches up to about two feet, with 
beds of the sandy till, often showing traces of stratification, both above 
and below it. At the point just west of Section 15 the sand and 
gravel lenses in the upper till sheet are separated by masses of clay 
from two to four feet thick. These sand and gravel beds are from one- 
half to two feet in thickness and about fifty feet or less in length. They 
are looped downward in the middle so that they appear in the cliff-face 
as if hung in great festoons. At times the stratification planes are found 
even in the clay portions of the deposit. Where the bedded structure 
is well developed it is often found to be remarkably contorted and 
twisted. Masses of the hard clay portions are occasionally found whose 
greatest dimensions, as shown in cross section in the cliff face, are ver- 
tical, and between them there will be found patches of cross-bedded 
sands. In the sandy portions of this till sheet there are often found 
large lenses of coarse gravel. One of these, four feet in thickness and 
several yards in length, appears to divide the upper till into two parts 
in the vicinity of Section 6, just west of Port Granby. About three 
quarters of a mile west of Port Granby, at Section 7, the upper till 
reaches the greatest thickness. Here gravel lenses, intimately associated 
with masses of unstratified clays, are particularly well shown, although 
the stratification, so evident in other parts of the section, is not so pro- 
minent a feature at this section. The sheet carries numerous pebbles 
and many boulders, chiefly of archezan rocks. Striated pebbles occur 
both in the bedded and in the massive parts of the till. There is a 
short section of the same sheet shown in the upper part of the cliff west 
of Port Hope. It seems not improbable that the bedded clays which 
occur three miles east of Cobourg and were described above may be 
contemporaneous with this till sheet. 
STRATIFIED DEPOSITS. 
At the base of many of the sections between Newcastle and Port 
Granby is found a series of fine unctuous, stratified clays, generally 
resting directly upon the first sheet of till. The thickness of these clays 
varies considerably, the maximum being about fifteen feet. 
Conformably overlying these clays is a series of fine sands in beds 
varying from a few inches to several feet in thickness, and usually cross 
bedded (Plate [I., Fig. 1). The maximum thickness of the beds of this 
first interglacial epoch, including the laminated clays above referred to, 
is about sixty feet. It varies locally, however. 
