National Geographic : 1892 Mar 21
The gathering of the Glaciers. would not suspect that the visible portion is 3i miles long. West of and separated from Girdled glacier only by a narrow ridge is Granite canyon, a deep gorge with precipitous sides, running about eight miles into the heart of the mountains.* The ice slopes downward into the canyon, whose drainage, however, must be back under the ice; for although I was unable to see every point of the ridge which closes in the further side of this valley, I could see sufficient of it from different points of observation to convince me that no part of it is less than a thousand feet above the floor of the valley. This curious condition seems to be due to the fact that the valley once contained a tributary glacier, which on account of the present smaller supply of ice and the reflection of the heat from the northern side of the canyon has melted down more rapidly than the surface of the main glacier, so that now (although this I could not see) the glaciers draining into this valley are probably entirely separated from the ice entering at its mouth. The tributaries so far mentioned supply none of the ice which forms the ice-front in Muir inlet; all the ice coming from them that does reach the end of the glacier is compressed into about 800 yards between the ice-front and the mountain on the east. If a line were drawn from the nunatak H to the eastern side of the first northern tributary and a second line toward the northwest at right angles to the first, the sources of all the ice which reaches the ice-front would lie in the quadrant between them. The first and second northern tributaries and the main glacier present no striking peculiarities (see plate 7). These are immense streams of ice, fed by innumerable small glaciers. The moun tains which rise between them and through them are deeply laden with snow, and toward the northwest seem to raise only their summits through the icy sea. The extremities of these branches could not be clearly determined, although they all seem to connect by low divides with valleys beyond. The northwest ern tributary heads in two beautiful white conical mountains, which we called the Snow cones. A part of its ice flows over the divide between 1, and 15,and joins a large glacier which is probably identical with the one entering the head of Glacier bay. The western tributary supplies no ice to the ice-front; moreover, * This was named from the crystalline nature of the rock, which, how ever, according to Professor Williams' report (supplement ii), is not a true granite.
1892 May 15
1892 Feb 19