Letter from [John Muir] to [Jeanne C.] Carr, 1872 Oct 8.

• Main Author: John Muir
• Format: Text
• Language: English
• Published: Scholarly Commons 1872
• Subjects: John Muir; correspondence; letters; author; writing; naturalist; California; correspondent; mail; message; post; exchange of letters; missive; notes; epistle; Carr; Lyell Glacier
• Online Access: https://scholarlycommons.pacific.edu/jmcl/12479; https://scholarlycommons.pacific.edu/context/jmcl/article/37413/type/native/viewcontent/fullsize.jpg

[10]from bank to bank past a plumb line made of a stone & a black horse hair. On observing my stakes on the 6th of October or in 46 days after being planted I found that Stake No 1 had been carried downstream 11 inches, No 2, 18 inches No 3, 34 No 4, 47 inches, As stake No 4 was near the middle of the glacier, perhaps it was not far from the point of maximum velocity, 47 inches in 46 days or 1 inch per day Stake No 5 was planted about midway between the head of the glacier & stake No 4 its motion I found to be in 46 days 40 inches. Thus these ice masses are seen to possess the true glacial motion. Their surfaces are striped with bent dirt bands. Their [11]surfaces are bulged & undulated by inequalities in the bottom of their basins causing an upward & downward swedging corresponding to the horizontal swedging as indicated by the curved dirt bands. The Mt McClure glacier is about one half miles in length & about the same in width at the broadest place. it is crevassed on the South- East Corner The crevasse runs about SW & NE & is [deleted: no where] several hundred yds in length Its width is nowhere more than one foot in width. The Mt Lyell glacier separated from that of McClure by a narrow crest is about a mile in width by a mile in length. [deleted?: I have planted stakes in the glacier of Red Mountain also but have not yet observed them.] https://scholarlycommons.pacific.edu/jmcl/37413/thumbnail.jpg