10 be new snow fine in grain probably ten days [two weeks] old The causes that produce the deep shell sculpture of the snow covering the gls here cannot be connected in any way with wind action because they are so regular & determinate in form & position & maintain so fixed a relation to the direction of greatest [ ] No doubt they are pressure in slipping of the snow down the face of the gl producing a coarse stratification. This sculpture is never produced in the ice itself. Has the motion of the ice anything to do with the stratification of the surface snow? Is this sculpture produced on gls wh flow E & W How are the small irregular snow furrows somewhat [ ] wh cover nearly all the melting snow & mud that has been frozen
11 & that extend in nearly [over [ ]] an E & W direction. Much of the snow on gl & higher mtns at foot of gls glistens with [thin] scales of ice 3 or 4 in [inches] long & broad in wh the six sided crystals are seen. How were these produced? [sketch: 21; 14; 8 ½; 22; Cld at top; section showing curve of surface of gl of Lyell June 3rd 1873 ] Was the 8 ½ [degree] slope made by slipping of snow from (moraine) above? The snow level with top of terminal moraine.
Original journal dimensions: 10 x 16.5 cm.
Holt-Atherton Special Collections, University of the Pacific Library
John Muir, journals, drawings, writings, travel, journaling, naturalist