Postglacial Submergence east of Georgian hag. — Taylor. 277 
seen, however, which would tend to establish the fact of sub- 
mergence. 
The village of Parry Sound is built upon a gravelly delta 
deposit which is about 50 feet above the sound. Across the 
river I ascended the rugged hill back of Parry Harbor to an 
altitude of about 150 feet, but found no distinct evidence 
of postglacial submergence. Our exploration, however, was 
too limited at this place to give much value to this negative 
result.* From Parry Sound we went by stage 18 miles across 
the country to Port Cockburn, at the head of lake Joseph. At 
two or three places evidences of general submergence were 
seen. On the west side of Horseshoe lake, there are some ter- 
races which are evidently the product of wave action. They 
were about 60 feet above the lake, and about 210 feet above 
Georgian bay. About the head of lake Joseph there are some 
suggestive features about 50 feet above its surface, but none 
that were distinct and clear. Nor were any noticed on the 
trip down lakes Joseph and Muskoka. 
Gravenhurst. At this place our time was too short to ad- 
mit of thorough examination. In the upper part of the vil- 
lage, however, there is a wide sandy and gravelly ridge which 
faces westward over Muskoka lake and is undoubtedly in part 
the work of waves. But we did not see any evidence which 
showed whether it is the highest ridge or not. Its altitude is 
about 825 feet above sea level. In going northward by train 
we saw abundant evidence of submergence within two to four 
miles, at levels 75 to 100 feet higher, but the upper limit was 
not distinctly made out. 
Bracebridge. At this place we found magnificent remains 
of the great submergence. They are of two kinds: one is the 
product of wave action, and the other of still- water deposi- 
tion. The latter, especially, is developed on a grand scale. 
The beaches are clearly defined, and the still- water sediments 
are fine-bedded or lamina ted silts and clays in horizontal lay- 
ers, forming a deposit 75 to 100 feet thick. 
Taking the main road northeast from Bracebridge we 
crossed the river just below the station and climbed the steep 
ascentof the east bank to the surface of a sandy plain. Within 
*I have since learned that Mr. Gilbert had visited Parrj Sound and 
found terraces which we did not sit. 
