49 [The] ness of the ground also causes the snow to move with varying power on the bottom & to move in varying directions causing the uprooted or broken trees to [be] deposited with far less regularity in [ ] Also because the lava affords better [anchorage] more are broken off The glaciers of Shasta are likewise less regular in form, much crevassed because of the [controlling] power of their [channels] cut in lava. The stratified [layers] of the summit show conclusively
50 that the outlines of the mtn have not been very greatly altered since the glacial period. The form of Shasta has not been very greatly altered by gl action in any direction although the [fragmentariness] of its summits shows that it has been considerably denuded The hot spring on summit gives off consid [considerable] quantity of steam, heavy & sulphurous the last feeble expression of that vast volcanic energy wh uplifted & outpoured all that is now Mt Shasta
Original journal dimensions: 9 x 14.5 cm.
Holt-Atherton Special Collections, University of the Pacific Library
John Muir, journals, drawings, writings, travel, journaling, naturalist