National Geographic : 1892 Mar 21
30 H. F. Reid-Studies of Muir Glacier. its snow fields are too small and too low to supply ice for a glacier of its width, and it is evidently melting away. At its western extremity it crosses over a divide and flows into a valley beyond. The mountains immediately surrounding Muir glacier are not high, the highest peaks being between 5,000 and 7,000 feet. The mountains which first attract the attention of the visitor are mount Wright,* mount Case,t and Pyramid peak (see plates 1, 3 and 8)-the first two by their jagged crests, seamed by snow corloirs; the last by its symmetrical form; all three by their proximity. The more distant mountains seem to lack somewhat in individuality. This is largely due to their distance, for they are from fifteen to thirty miles away. All is bare and bleak, and the scenery is entirely lacking in picturesqueness. If we go out on the ice as far as H the three bold peaks of mount Young show themselves over Tree mountain (see plate 9), and the beautiful Snow cones at the head of the northwestern tributary can be seen. Surface of the Glacier. The surface of the ice presents the honeycombed appearance common to all glaciers; it crunches under the foot, making walk ing very tiresome, and rapidly wears out one's boots. This sur face ice varied very much with the weather. Sometimes after rain the ice was hard, smooth, and blue; sometimes the rain increased the roughness. Crevasses. The eastern part of the glacier was free from all large crevasses ; none in this part were too large to be stepped over. This, of course, indicates a small differential motion, not necessarily a small actual motion. That this, however, is also small follows from our measures, which show that although all the ice supply from the eastern part of the glacier is crowded through a narrow space between the ice-front and the mountain to the east, still the greatest motion here is only about two inches a day (see page 45). The amount of crevassing in the other- parts of the Named after Professor G. Frederick Wright, who spent some time studying Muir glacier in 1886. He has described it in his Ice Age in North America, chap. iii . t Named after the Case School of Applied Science, Cleveland, Ohio.
1892 May 15
1892 Feb 19