189a cooled -- the gls [glaciers] came down again cutting new channels guided in their courses by the new topography These channels in some instances seem to have coincided [by] with the ancient ones, in others they certainly did not. It is only in regions where the general [underscored] surface is comparitively level that these ancient deposits occur. The bed of ancient Yuba 600 ft [feet] above present
Original journal dimensions: 9 x 14.5 cm.
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John Muir, journals, drawings, writings, travel, journaling, naturalist