248 Professor R. A. Daly — 



individuality of character, enough strength of expression, or enough 

 continuity to indicate a long stand of the sea at any level. Distinct 

 beach fragments were found at all altitudes, in such places as were 

 peculiarly favorable to exposure to the open sea, or in supply of beach 

 material. This is believed to indicate that the emergence of the Saint 

 Lawrence valley from the Champlain sea was not accomplished by 

 spasmodic uplifts, separated by intervals of repose, but was fairly 

 steady and continuous. ... In marked contrast with the weak beaches 

 at higher levels, the shoreline which stands 20 feet above the sea is 

 strong and continuous." ^ Similarly, the present writer could find no 

 sure evidence of pronounced halts in the uplift of Labrador, where, 

 however, the great strength of the bed-rocks and the general absence 

 of thick glacial drift would in any case forbid the development of 

 continuous beaches or benches in the time available. For the same 

 reasons the topographic equivalent of the Micniac terrace would not 

 be expected in Labrador, except quite locally, even if the emergence 

 took place at identical rates in the two regions. The width of the 

 Micmac terrace varies from a few feet to lb miles or more. Though 

 only a part of its width is due to wave-cutting, and though 

 the formations affected are relatively weak, the 20 ft. higher level 

 of the sea must have been steadily kept for a large fraction of post- 

 Glacial time. 



Farther east in the Gulf of St. Lawrence, at Anticosti, Twenhofel 

 found elevated shorelines at intervals up to 350 feet above sea. 

 " The lowest is between eight and fifteen feet above high tide." 

 The corresponding terrace "reaches a maximum width of more than 

 two miles and will average more than one-fourth mile". On the 

 eastern two-thirds of the south coast for about 80 miles, this terrace 

 is two or more miles wide, and is described as occurring in many 

 other parts of the island.* 



At Arisaig, Nova Scotia, on Northumberland Strait, Twenhofel 

 noted a " raised " beach, roughly estimated to be 25 feet above 

 sea (mean water-level ?).'* 



Maine. — " Throughout the region of Penobscot Bay the best 

 defined and most widely developed terrace has an elevation of 

 20 to 25 feet above sea-level."'' Li the Rockland folio of the United 

 States Geological Survey Bastin writes (1908) : " The most widely 

 developed terrace stands about 15 to 25 feet above mean tide." 

 Along the Maine coast in general Stone noted evidence of a pause 

 in the post-Glacial " fall of the sea " at an elevation of 20 feet 

 above (mean ?) sea-level.° The present writer's field observations 

 accord with these published statements, which indicate a recent, 



1 J. W. Goldthwait, Amer. Journ. Sci., vol. xxxii, 1911, pp. 293-4. 

 ^ W. H. Twenhofel, Amer. Journ. Sci., vol. xxx, 1910, pp. 66, 69. 

 ^ Ibid., vol. xxviii, 1909, p. 147. 



* G. O. Smith, E. S. Bastin, and C. W. Brown, Penobscot Bay folio, U.S . 

 Geol. Survey, 1907, p. 13. 

 s G. H. Stone, Monograph 34, U.S. Geol. Surv.. 1899, p. 53. 



