26 THOMAS L. WATSON 



was especially noticed, it looked in every way as though it were 

 artificial ; the crescentic beach, which held up a lake behind it, 

 had been so regularly constructed that had it been in an inhab- 

 ited region Professor Tarr states that he should have ascribed it 

 to the hand of human beings instead of to nature's handiwork. 

 These crescentic lines were composed of large bowlders, weigh- 

 ing from fifteen to twenty pounds, and in length were from lOO 

 to 125 feet, rather narrow topped, probably six feet across, but 

 several times this width at base. The exact counterpart of 

 these was seen in process of formation in one place at sea level, 

 in which the ice was an important factor in their construction. 

 The ice, moving in strong tidal currents, bore along bowlders 

 and ground them against the coast, forming a bowlder pave- 

 ment of a very perfect kind.^ Professor Tarr states that, due to 

 the narrowness of the valleys, it would be impossible for these 

 to form without the aid and action of the ice, for no waves could 

 exist here which would transport and pile up such an accumula- 

 tion of bowlders, particularly when below the zone of ice action 

 the bottom is clayey. 



Fossils. — The following genera of living shells were found: 

 Mya, Saxicava, Pecten, Terabratula, Balajius, and several other 

 living species. These were found in a blue mud, some patches 

 of which were fifty to sixty feet across, in some cases covered 

 with moss, and in others not. Fossils were also found at lower 

 levels. 



Weathering.- — Professor Gill independently suggested recent 

 elevation purely on the basis of the weathering of the rock in 

 place. In chipping and breaking off petrographical specimens 

 he found a striking difference in degree and intensity of weather- 

 ing, which he placed at an elevation of from 300 to 400 feet. 

 The rocks below this elevation were found to be much less 



' For action of similar kind described by Packard and"FEiLDEN along the 

 Labrador coast see references in Bibliography. 



^I am indebted to Professor A. C. Gill for kindly furnishing me with this fact. 

 The exact elevation of contact marking the difference in degree of weathering was 

 not determined. 



