1913I The Moraine Systems of Southwestern Ontario. 77 



waterlaid throughout and is generally weak and faint, especially so 

 between Streetsviile and Toronto and from Claremont east. In the 

 city of Toronto its course as indicated by the parts east and west of the 

 city would lie along the Waldron ridge, which is the bluff extending from 

 west to east through the northern part of the city a little south of St. 

 Clair Avenue. But in this part no certain evidence of the moraine was 

 found. This may be due to the heavy cutting on this part of the shore 

 of Lake Iroquois, for the bluff of Waldron ridge was made by that cutting, 

 which removed a considerable body of drift that once extended south 

 from where the bluff now is. West of Toronto the ice front at this time 

 had three sharply pointed tongues or lobes corresponding to the valleys 

 of the Credit, Etobicoke and Humber rivers. This, with the obstructing 

 r61e played by the high ground at Scarboro bluffs, shows the sensitive- 

 ness of the ice to topography. From its altitude and general relations 

 there is much reason to believe that the Scarboro moraine is the corre- 

 lative or continuation of the Albion moraine in New York. East of Lock- 

 port the Albion moraine lies at the front of the escarpment. Very little 

 that might belong to it has been found farther west, but the Scarboro 

 moraine holds the same relation to the escarpment southwest of Ash 

 and all the moraines on the Niagara peninsula are substantially hori- 

 zontal from east to west. 



The space interval between the Bolton and Scarboro moraines is 

 unusually wide for the series of the slender moraines. At several places, 

 especially south of Milton, faint evidences of a moraine were found in 

 this interval, but they seemed too faint and uncertain to put upon the 

 map. 



Two or three miles northeast of Port Nelson there are low till knolls 

 which appear to be part of a terminal moraine. They are very bouldery 

 and give the impression of having been severely washed down during 

 submergence, which is probably the case, for they lie below the Iroquois 

 beach. It seems probable that this fragment finds its correlative in the 

 Carlton moraine in New York. 



Moraines of the Georgian Bay-Lake Simcoe Ice Lobe. 



The moraines along the escarpment have been discussed in connec- 

 tion with the Erie and Ontario ice lobes, and besides these there are at 

 present very few morainic deposits to be discussed in connection with 

 this lobe. 



I. The Owen Sound Moraine. — Small fragments of a moraine lower 

 than the Port Elgin moraine were found on the slopes east and west of 

 the city of Owen Sound. They are well defined and very bouldery. 



