Science . The three diagrams here presented are re-produced from an article by the undersignedon The sculpture of mountains by glaciers(Scot. Geogr. Mag., XXIL, 1906, Y6-89), inwhich evidence for glacial erosion is found ina comparison of glaciated and non-glaciatedmountains, entirely independent of whetherglaciers are known to be capable of eroding ornot. In view of the inaccessibility of the. itToDglr tffwted by gUckn whldi it}U bottom of a large Alpine glacier, it is believedthat the best means of determining whether itacts as a sculpturing agent or not is to b«found in a comparison of dist
Science . The three diagrams here presented are re-produced from an article by the undersignedon The sculpture of mountains by glaciers(Scot. Geogr. Mag., XXIL, 1906, Y6-89), inwhich evidence for glacial erosion is found ina comparison of glaciated and non-glaciatedmountains, entirely independent of whetherglaciers are known to be capable of eroding ornot. In view of the inaccessibility of the. itToDglr tffwted by gUckn whldi it}U bottom of a large Alpine glacier, it is believedthat the best means of determining whether itacts as a sculpturing agent or not is to b«found in a comparison of districts, otherwisesimilar, one of which has not been glaciated,while the other has been glaciated. The dia-grams are not drawn from nature, althoughthey summarize a variety of facts seen invarious mountain ranges. The third one ofthe series may be taken as typical of LaPlata peak, in the Sawatch range of Colorado,and of the overdeepened trough of Lake Creek beneath it, with a well-defined hanging lateralvalley between the two. It is of interest to note in this connectionthat a good explanation of hanging lateralvalleys was given earlier than the date, 1898,usually assigned for this important advancein rational physiography; namely, in 1888, byLa Noe and Margerie, in Les formes duterrain (Paris, Service geograph. de Iarmee,p. lYY), where the cause of the discordance ofhanging lateral vall
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