John Muir


[Joseph] Le Conte


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[on letterhead: Pen Sentinel Hotel, A. C. BLACK, Proprietor.] Yo Semite Valley ______________187coincide with the present line of summits but lies to the East ward of them, because the range runs to the West of North & consequently the West side of the range received more heat & the west side glaciers were more wasted in summer & kept smaller than those of the more sheltered eastside, & were not able to do so much denudation work, therefore the main axis was overridden after being sharpened to a crest, & the summits gradually pushed westward to their present positions Section 2 [drawing] Geological axisCAD present outline of D The crest of every main cross section of summits & spur summit out of sun balance has been pushed thus to the warmer sideA B Line of successive glacier-made summits gradually driven from axis westward[in margin: Besides these at 33° E lines there are others which we will see & study hereafter. I have a thought or two & some facts [illegible] glacial flora of this region [illegible] you call attention, come for writing is discouraging with such truths. Cordially yrs John Muir By summits I mean any mountain [wave?] sufficiently high for glacier fountains.]


Yosemite Valley

Date Original

1872 Apr 20


Original letter dimensions unknown.

Resource Identifier


File Identifier

Reel 02, Image 0777

Copyright Statement

The unpublished works of John Muir are copyrighted by the Muir-Hanna Trust. To purchase copies of images and/or obtain permission to publish or exhibit them, see

Owning Institution

The Bancroft Library, University of California at Berkeley. Please contact this institution directly to obtain copies of the images or permission to publish or use them beyond educational purposes.

Copyright Holder

Muir-Hanna Trust

Copyright Date


Page Number

Page 3


John Muir, correspondence, letters, author, writing, naturalist, California, correspondent, mail, message, post, exchange of letters, missive, notes, epistle