Notes 071 the Albany Meeting. 473 



distances. Evidently stratified aqueous deposits. Ques- 

 tions as to the origin of such limestones. The associated 

 rocks and minerals. Owing to the absence of trees the 

 limestones are conspicuous in the landscape. Not more 

 eroded than the gneisses. Comparison with the Lauren- 

 tian limestones elsewhere. Former physical conditions 

 and the older and newer glaciations of Baffinland as 

 affecting the limestones. The existing glaciers there." 

 This paper was illustrated by lantern slides. 



3. " Marine and Fresli-ioater Beaches in Ontario," by 

 Prof. A. P. Coleman, Toronto, Canada. 



" Marine deposits, often rich in shells and other fossils, 

 are widely found east of Brockville and Smiths' Falls, in 

 the valleys of the Ottawa and St. Lawrence. They occur 

 at higher levels toward the north-east and east than 

 toward Brockville ; they include trees and other forms 

 indicating a climate like that of to-day, and are all evi- 

 dently post-glacial. The shells occur in clay sand and 

 also coarse gravel. Higher beaches such as the Iroquois, 

 Warren, etc., contain only fresh-water shells if any. Still' 

 higher beaches, such as those reaching 1,400 to 1,600 feet 

 above sea level in the highlands between Georgian Bay 

 and Lake Huron, and the beaches found above 1,400 

 between Lake Huron and Missinaibi, and at the same 

 level on the Hudson Bay watershed north-west of Sudbury, 

 have not yet been found to contain shells, although if 

 marine there must have been complete and widely opened 

 connection with the sea. The wide gravel tearaccs on the 

 watershed mentioned contain numerous and large kettle- 

 shaped lake basins, sometimes without outlets, suggesting 

 that they were formed by the burial of large blocks of ice 

 at the border of the Laurentian ice sheet, and hence in ice 

 dammed waters." 



In the discussion which followed this paper, Messrs. F. 

 B. Taylor, X. H. Winchell, W. M. Davis and the writer 

 took part. 



