A GEOLOGIST'S WINTER WALK 



when all the principal dividing crests were 

 bare; and its depth was not less than fifteen 

 hundred feet. Ice-streams from Mounts Lyell 

 and Dana, and all the mountains between, and 

 from the nearer Cathedral Peak, flowed hither, 

 welded into one, and worked together. After 

 eroding this Tenaya Lake basin, and all the 

 splendidly sculptured rocks and mountains 

 that surround and adorn it, and the great 

 Tenaya Canon, with its wealth of all that 

 makes mountains sublime, they were welded 

 with the vast South, Lyell, and Illilouette 

 glaciers on one side, and with those of Hoffman 

 on the other thus forming a portion of a yet 

 grander mer de glace in Yosemite Valley. 



I reached the Tenaya Canon, on my way 

 home, by coming in from the northeast, ram- 

 bling down over the shoulders of Mount Wat- 

 kins, touching bottom a mile above Mirror 

 Lake. From thence home was but a saunter 

 in the moonlight. 



After resting one day, and the weather con- 

 tinuing calm, I ran up over the left shoulder of 

 South Dome and down in front of its grand 

 split face to make some measurements, com- 

 pleted my work, climbed to the right shoulder, 

 struck off along the ridge for Cloud's Rest, and 

 reached the topmost heave of her sunny wave 

 in ample time to see the sunset. 

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