1905 | THE GLACIATION OF Mount OrForp, P.Q. 55 
innocent of any knowledge of the subject under discussion, and of 
the reasons why an hypothesis of this kind should be considered 
nec2ssary. It is surprising how many writers on glacial questions 
there are who do not seem to know that a moving glacier, like 
running water, cannot flow higher than its source. According to 
the views of these scientists there would appear to be no difficulty 
in ice flowing from the Laurentides, which are only 1,500 to 2,000 
feet high, over the north-east Appalachians 2,500 to 5,000 feet 
high or more. The hypothesis of a greater elevation and a vast 
“sheet of ice in the Laurentian region has, of course, been advanced, 
but this does not satisfy the conditions of the problem, in fact it is 
merely one hypothesis brought forward in support of another. If 
we admit the principle of oscillations at all, is it not just as reason- 
able to assume that these took place in the Appalachians as in the 
Laurentides? To suppose the former to have been a stable region 
in the glacial period, while the latter was rising and falling, as has 
been done by the advocates of great glaciers, does not seem prob- 
able, and moreover, the evidence adduced in support of such a 
condition of things is of little or no value. But the limits of this 
note will not permit me to go into further details at present. | 
may remark, however, that in my official work, while broaching 
several hypotheses, I have been conservative ; and in regard to 
the glaciation of the St. Lawrence valley, I have taken existing 
levels as those which may, after all, have obtained in the early 
part of the Pleistocene period. These, I found sufficient, at all 
events, to enable me to explain the striation and transport of 
boulders in south-eastern Quebec up to the international boundary. 
