GLACIAL DRIFT. 239 
LocaL GLACIERS IN THE WHITE MOUNTAINS. 
I will now present whatever additional facts may be known respecting 
the existence of former glaciers radiating from the White Mountain high- 
lands. We have seen that my father and Prof. Agassiz agreed as to the 
nature of the glacial markings upon the mountains,—that they belonged 
to the older and continental sheet, a south-east movement proceeding up 
hill whenever obstacles made it necessary. The markings described by 
Packard and Vose, claimed to have been the result of local glaciation in 
the Peabody valley, have been shown to belong to the older movement. 
The others mentioned by Packard in Jackson are properly local, and will 
be described presently. 
In order to prove that glaciers have radiated in all directions from the 
White Mountains, it is necessary to find evidences of northerly or north- 
west motion. Evidences of valley movements towards the south-east can 
easily be referred to the general south-east movement, modified slightly 
by the topography. If nothing else could be found, the doctrine of the 
existence of local glaciers would depend upon unreliable evidence. The 
researches of Agassiz about Bethlehem were the first in this direction in 
New Hampshire. He found evidence of a movement opposite to that of 
the general drift. Hence this must have been different from the com- 
mon drift, and, taken in connection with the other features described, it 
was found to have been local, and existed in the decline of the ice period 
after the continental sheet had mostly disappeared. The action was 
rarely sufficiently energetic to score the ledges. Agassiz does not rely 
upon that class of evidence in maintaining his position. The ice of this 
Franconia-Bethlehem movement has passed over ledges, but has not 
smoothed or striated them. The boulders which went southerly in obe- 
dience to the south-east movement were simply pushed back towards 
their source ; and we find very few cases of their protrusion beyond their 
starting-point. I will first add whatever observations I can in elucidation 
of this specific example, and then describe the other observed facts seen 
nearer the mountains. 
The starting-point of this glacier was in the prominent valley back of 
Eagle Cliff, on the north-west flank of Mt. Lafayette. This was visited 
by my father in 1851, and a sketch of the phenomena seen described 
