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15 means I was enabled to measure the flow of the glacier with great exactness. Examining this stake in 24 hours after
setting it, I found that it had been carried down about 3/16 of an inch At the end of four days I again examined it found
that the whole downward motion was 13/16 of an inch showing that the flow of this glacieret was perfectly regular. In accounting
for these narrow lane canons so common here I had always re illegible ed them to ice action in connection with special conditions
of cleavage, I was gratified to find that their formation was still going on. This Hoffman glacieret is about 1000 feet long
by 15 to 30 feet wide. perhaps about 100 feet deep in deepest paces. Now there Mrs Carr I must in margin: hasten back to
the Mtns, I'll go tomorrow 00625 There is a line through whole page 4 12 The Sierras adjacent to the Yosemite Valley
are composed of Slabs of granite set on edge at right angle, to the direction of the range or about N 30 E, S 30 W Also lines
of cleavage cross these running nearly parallel with the main range. Also the granite of this region has a horizontal cleavage
or strabfication. The first men- tioned of these lines have the fullest development give direction character to many valleys
canyons determine the principal features of many rock forms No matter how hard domed homog illegible eous the granite may
be it still possesses these lines of cleavage wh require only simple conditions of moisture, time etc for their development.
But I am not