Postglacial Submergence east of Georgian bag. — Taylor. 281 
they connect with the Lake of Bays, which empties into the 
south branch of the Mnskoka river and formed another of the 
many ancient inlets of this region. The fine bedded silts were 
found at several places in Huntsville close up to the level of 
the beach. I have no doubt that this shore line is a part of 
the highest beach of postglacial submergence and is one with 
the main beach on the more exposed coast outside. 
Burk's Falls. Our observations at this place were some- 
what disappointing. We failed to find any distinct beach 
which might mark the upper limit of submergence. Probably 
this was because of misinformation with regard to the proper 
roads to take to reach favorable high ground. Many inter- 
esting remains of submergence, however, were observed, nearly 
all of them belonging to the fine sediment class. The laminated 
silts and cla} r s of Bracebridge are in some respects equalled, 
if not excelled, by those at Burk's Falls, where also they at- 
tain a depth of about 100 feet. The Maganetawan river has 
cut a deep ravine through the silt bed, and its little tributa- 
ries have cut numerous gullies in the remaining mass. The 
general appearance of the formation is the same as at Brace- 
bridge. We drove about three miles and a half southeast of 
Burk's Falls to a point on the hills near Katrine. The cleared 
farms of that vicinity are mostly on the gullied surface of the 
silt deposit. At one point the road rises to a level of about 
135 feet above the station and cuts a bed of water- worn gravel 
which may be related to the submergence, but we saw nothing 
which would establish that fact. Between the village and the 
station gravel beds were observed in two places resting on the 
top of the silt. One of these is south of the road near the 
Presbyterian church, the other is on the opposite side near the 
top of a low hill. It seems probable that these gravels mark 
a. level not more than 80 or 40 feet below the maximum night 
of water during submergence. We also drove ;ihuut four 
miles west from the village to an old winter lord of the Ma- 
ganetawan. The road is mostly at lower levels, and. for the 
first mile or two, crosses the gullied Burface of the silt. Some 
interesting sections of the deposit were seen here with the 
laminations beautifully displayed and in several places very 
much disturbed by faults and folds, which appear t<> be din- 
to landslides and slippings on the steep sides of the gullies. 
