NOTES ON THE LATE COLLECTING SEASON 



to the place of this mineral. It is about three feet in 

 height, but this could not represent the thickness of the 

 bed originally, judging from its present appearance of pure 

 Orthoclase. No other ingredient was noticed in it. 



While I am almost certain fragments of Serpentine 

 found during the late collecting season there came from 

 glacial cla5^ also, as lying loose close by, it cannot be actu- 

 ally claimed as derived from it perhaps. 



While we were all satisfied regarding Dr. Spencer's 

 views as to Burlington Heights representing the ancient 

 Lake Iroquois beach, when old members of the Geological 

 Section may remember considerable difference prevailed 

 among ourselves, an early paper by one of our members, 

 Wm. Kennedy, attracted much attention. He considered 

 the Grand River, which found its way from the direction of 

 Dundas, deposited at its mouth in the still waters of the 

 great lake the material which composes that vast accumu- 

 lation of water-worn limestone, shingles and sand which 

 runs through the city and displays itself as a gigantic ridge 

 at the Central School. Another expressed his opinion that 

 the Beach represented a glacial Moraine. A gentleman from 

 Chicago supposed the chief part of the material (Hudson 

 River) was convej^ed from the north shore bed of the lake, 

 forced by winds and currents to the head of the lake. None 

 of the foregoing theories satisfactorily account for the 

 presence of Archaean rocks. If a deep channel exists in 

 the middle of the lake resembling the Niagara gorge, as 

 stated, how could the material washed into it find its way 

 out ? It seems impossible. 



The writer thinks that the few places along the lake shore 

 near Winona containing fossils merely represent a remnant 

 of a glacial clay deposit extending continuously for miles. 

 At the pond to the east of the camp at a comparatively 

 recent time the waters of the lake burst through the barrier 

 washing away the clay deposited, but leaving many of the 

 larger rock specimens scattered on the strand similar to the 



