1:36 R. S. TARE — GrLACIATION OF MOUNT KTAADN, MAIXK 



many transported pul)l)les were found on the north peaks, the highest of 

 which is t,700 feet in elevation. The second expedition to the top of the 

 mountain was over Pamola (see plate 31), which is also distinctly lower 

 than South peak. While a careful search for transported pebbles was 

 not made there, because the mountain is so much lower than South peak, 

 the fact that in making this journey none were seen would prove that they 

 are at least much less abundant than on North and South peaks; for 

 one does not need to search with marked care on these peaks in order to 

 find transported fragments. The only explanation that I am able to sug- 

 gest for their scarcity or absence from Pamola is the prevailing steep- 

 ness of the slope in all directions, which might well have permitted the 

 larger number of imported fragments to have been carried away since 

 the ice left them there. The more gentle slope of the crests of North 

 and South peaks is much more favorable to the retention of these trans- 

 ported fragments. 



On the third expedition to the top of mount Ktaadn, which by one 

 measurement was shown to have an elevation of 5,150 feet* both Mr 

 Martin and I found transported pebbles all the way from the base of 

 South peak to its very crest. In the course of the climb from the plateau 

 to the crest of South peak, no less than two or three hundred transported 

 fragments were seen. They were so numerous that we did not find it 

 necessary to search carefully for them, and on reaching the crest, within 

 20 feet of the cairn marking the highest point on Ktaadn, three frag- 

 ments were found, and others could doubtless have been obtained had 

 we searched for them. 



The mountain, as shown by Hamlin, consists entirely of granite, which 

 in unprotected portions has been much disintegrated by frost. There are 

 places where one travels entirely on these broken fragments of Ktaadn 

 granite. This is especially true of the serrated and .very rough ridge be- 

 tween South peak (East peak of Hamlin, plate 31)and Pamola. where one 

 would doubtless have difficulty in finding foreign pebbles. South peak 

 (West peak of Hamlin, plate 31) slopes rather gently toward the north ; 

 in fact, there are patches on it where the granite rock is partially covered, 

 and it was in these places that the foreign pebbles were found to be most 

 abundant. They consist in some cases of schists, in others of slaty rocks 

 resembling argillite, and in still others of sandstones. There can be no 

 question as to their derivation from a distance, and this derivation must 



*The eleVation of the mountain was obtained by an aneroid, with corrections for variations in 

 atmospheric pressure. In making the corrections the record kept at the nearest weather bureau 

 station, at Kastport, Maine, was used, owing to the distance between Ktaadn and Eastport, this 

 measurement can not be considered to be accurate, though it differs from Fernald's by only 0"> 

 feet. The other elevations were also made by aneroid, but the time occupied in making them was 

 a o brief that they may be considered to be approximately correct. 



