278 Tivenhofel and Conine — Post-Glacial Terraces. 



years, states that he is confident that there are parts now 

 above water which were submerged when he first came. 



Correlation with Terraces Elsewhere. 



It is extremely difficult to correlate any of the terraces 

 of the island w^ith those of other parts of the St. Lawrence. 



One may be certain that a terrace of the same time of 

 development is present on both the south and the north 

 sides of the Gulf, but to state the identity in time of devel- 

 opment needs far more work than has yet been accom- 

 plished. Goldthwait^ has described a 20-foot terrace and 

 sea-cliff about the lower St. Lawrence, and perhaps the 

 20-foot terrace of Anticosti is its correlative. 



At Ottawa, Johnston"^ has described old shore-lines up 

 to about 690 feet sea-level — more than 200 feet higher than 

 the highest terrace of Anticosti — and has found stratified 

 clays with fossils up to 510 feet. Many beaches are 

 present and some of these must -certainly correlate with 

 those of Anticosti, but it is altogether impossible to state 

 which are synchronous. 



University of Wisconsin, Madison. 



^ J. W. Goldthwait, this Journal (4), 32, 291-317, 1917. 



« W. A. Johnston, Geol. Survey, Canada, Mus. Bull. No. 24, 6, 1916. 



4 



