224 Canadian Record of Science. 



1800 feet. Above this the mountain is said to have stood 

 as a " minatak " or island within the glacier to a height of 

 at least 1000 feet. 



From these conclusions it is evident that the observa- 

 tions on which they are based did not include that dome- 

 shaped part of the summit of the mountain, which is 

 apparently its highest point. This, which is separated 

 from the highest of the bare and exposed peaks along the 

 front, or southern face of the mountain, by a deep ravine, 

 shows most undoubted evidence of glaciation. Here, near 

 the point where a flagstaff' has stood for the past few 

 years, the rock, a fine-grained and much-altered diabase, 

 is distinctly striated, and the whole eminence has a gener- 

 erally smoothed and rounded appearance. 



Fragments of clay-slate and pebbles of other rock 

 foreign to the mountain occur here, and boulders of ser- 

 pentine, evidently from the western base of the mountain, 

 are to be seen in other places near by. The rock appears 

 to have suffered less from atmospheric erosion than at points 

 of about equal height a few hundred yards to the south, 

 from which it seems reasonable to infer that it has here 

 been protected by a thin mantle of drift, of which the 

 transported rock fragments mentioned above are remnants, 

 which have not been removed by summer rains or forest 

 fires. 



The direction of the glacial strise, as measured at the 

 flagstaff' by Mr. A. H. Honeyman,of Knowlton,Que., and the 

 writer, was found to be S. 25° E., magnetic, which fairly 

 accords with the directions given by Mr. Chalmers for 

 strife caused by the greater Laurentide glacier at the foot 

 of the mountain. These range from S. 25° E. to S. 53° E. 

 on the true meridian. 



Eeasoning from this limit of the height reached by the 

 ice-sheet, viz., 1800 feet, Mr. Chalmers shows that if it 

 passed over the range of hills along the United States 

 boundary line, some 2000 feet in height, as was probably 



