1898] The Geological Society of America. 223 



the Mattagomi and Missinaibi Rivers, in the southern part of the basin 

 ot Hudson Bay ; (2) the finding ot a small Maramoth's tooth on Long 

 Island ofi the east main coast of Hudson Bay. 

 Ami, H. M. — " The Mastodon in Western Ontario!' 



In the course of this paper, the writer gave a brief sketch of the 

 interesting discovery of remains of portions of three skeletons of the 

 mastodon in the counties of Norfolk and Essex, Ont. 

 Taylor, Frank B. — " Notes on the Moraines of the Georgian Bay 



Lobe of the Ice- sheets 



When ihe ice-sheet had retreated in the basin of Lake Huron so far as to leave 

 the summit of Bkie Mountain south of Georgian Bay uncovered, there still remained 

 a well defined glacial lobe projecting towards the south-east nearly to Toronto and 

 eastward beyond Lake Simcoe. This lobe was divided in two parts by the Penetang 

 peninsula, the larger one extending south-east from Nottawasaga Bay and the 

 smaller one extending east-south-east from Matchedash Bay. Recently the moraines 

 of the eastern limb of the Nottawasaga lob° were partially exploied and a well 

 defined series of five moraines was found filling the interval from the head of 

 Georgian Bay to the ' Oak ridges " north of Toronto. During the latter stages of 

 this lobe there was a glacial lake covering Lake Simcoe and a considerable area to 

 the east, and probably held up on that side by a lobe firojecting from the north-east 

 up the Valley of the Trent river. Its beach is 90 to 100 feet above the Algonquin 

 beach a few miles north-east of Barrie. Well marked glacial striae were found on 

 the summit of the promontory of Blue Mountain over 1 100 feet above Georgian Bay, 

 running S. 60° E. Some of the moraines running along the east side of Lake Huron 

 were also traced northward to the vicinity of Durham and Flesherton. 



Dawson, Sir J. Wm. — " Note on Lepidophloios Cliftonensis." 



In connection with this pnper, Sir William writes the following 

 synopsis which appears in the printed programme of the Montreal 

 meeting: " In the bulletin of this Society for May, 1891, appeared a 

 paoer by the author on Fossils from the Carboniferous of Newfoundland, 

 including new species of Lepidodendro?i (Z. Murrayanum). In connec- 

 tion with this species I noticed what seemed a closely allied form from 

 New Brunswick, which I had named L. Cliftonense. Later studies of 

 this species have shown me that it should rather be placed in the allied 

 genus Lepidophloios. I have so placed it in a more recent paper 

 on that genus in the present year.* It should, therefore, be named 

 Lepidophloios Cliftonensis, but is one of the species of that genus nearest 

 to Lepidodetidfon and especially to my L. Mtirtayanum a'nd to Z. 

 Wortheni of Lesquereux, as I have already stated in the paper to which 

 this note is an addendum and erratum." 



*Trans. Royal Society of Canada. — Paper read before meeting at Halifax, N.S., 

 June, 1897. 



