Effects of glacial period very clearly & beautifully shown. The larger lakes long & river like & lying in vallies radiating from central peaks appear to be blocked in by ridges of moraine matter. Amphitheatre with almost perpendicular walls are common near the larger peaks & generally terminate the vallies They are open in front & almost invariably each holds a little indigo lake in its bottom which has evidently been formed by the descent of the glacier when near its last The prow ploughing deeply into the rubbish in the bottom of the amphitheatre once holding a great nevÈe. It is to be noted that the excavating power of ice thus descending almost vertically must be much greater than when moving down a nearly horizontal valley.
Sketch of cross-section of above paragraph: Descriptions in the diagram: Moraine rubbish. Lake. Snow Aug. 74. Snow Aug. 74. Presumed outline of glacier when lake excavated. Diagramatic Section of coombe lake