54 Tue Orrawa NATURALIST. [May 
found no striz, because the rock has deteriorated and the glacial 
surface destroyed.” If glacial marks could be destroyed in this 
way on the summit of a mountain 2.400 feet high is it likely they 
would be preserved on one 2,850 feet high, the rocks being 
practically the same in both ? 
The Canadian Record of Science for 1900-92,* also contains a 
criticism of my work on Mount Orford by Prof. J. A. Dresser, of 
Richmond, P Q., in a short paper entitled Mote on the Glaciation of 
Mount Orford. Inthis note, after quoting my statement about the 
mountain having been glaciated only to a height of 1,800 feet, he 
says: ‘* From these conclusions it ts evident that the observations 
on which they were based did not include that dome-shaped part of 
the summit of the mountain which is apparently its highest 
PObMt enc ccre ‘¢ Here, near the point where a flag-staff has stood for 
the past few years, a fine-grained and much altered diabase is 
distinctly striated, and the whole eminence has a generally— 
smoothed and rounded appearance.” Though Prof. Dresser 
writes so confidently he is not a glacialist, and in his desire to 
support his friend Prof. Hitchcock, his evidently fallen into the 
error of supposing that the weathered grooves and ruts in the 
dome-shaped part of the mountain summit, described by me, are 
glacial striz. As regards this, however, he can console himself 
with the thought that he is not alone in making this mistake, for 
Prot. Hitchcock, if he ever were there at all, has fallen into the 
same error. In another paragraph Prof. Dresser says :—‘‘ Reason- 
ing from this limit of the height reached by the ice-sheet, viz., 
1,800 feet, Mr. Chalmers shows that if it passed over the range ot 
hills along the United States boundary line, some 2,000 feet in 
height, as was probably the case, that those hills must have stood 
relatively lower than at present. This hypothesis is then applied 
to the explanation of certain high-level terraces near the inter- 
national boundary line, and the deformation of gravel beds around 
Lake Memphremagog and along the Coaticook and Salmen rivers. 
But in view of the evidence of ice-action at a much greiter altitude ~ 
than 1,800 feet, the hypothesis may no longer be needed,” etc. 
This gratuitous comment shows Prof. Dresser to be quite 
“Can. Record of Science, Vol. VIII, 1900-92, pp. 223-25. 
