. Results of a biological survey of mount Shasta, California. ) to bottom before taking its practically siraiglit westerlycourse down the rest of the mountain. It is the only canyon on Shas-tina, the only notable one on the west side of Shasta, and the only oneanywhere on the mountain that does not enmnate from a glacier. Itsstream comes from enormous banks of perpetual snow. A\hile the upi)er i)aits of the <-anyoiis are exceedingly steep andbarren, and pra<;tically devoid of vegetation, the middle and lowerparts are invaded by the trees of the adjacent sloi)es, and in marshyand springy
. Results of a biological survey of mount Shasta, California. ) to bottom before taking its practically siraiglit westerlycourse down the rest of the mountain. It is the only canyon on Shas-tina, the only notable one on the west side of Shasta, and the only oneanywhere on the mountain that does not enmnate from a glacier. Itsstream comes from enormous banks of perpetual snow. A\hile the upi)er i)aits of the <-anyoiis are exceedingly steep andbarren, and pra<;tically devoid of vegetation, the middle and lowerparts are invaded by the trees of the adjacent sloi)es, and in marshyand springy si)ots contain patches of willows, ahleis. and a nmltitude North American Fauna, No. 16. Plate III. 2O w o w Si r mw ^ JO ^ G a> Z d o r> O :a M M . ?^w. on- . STREAMS. 23 of smaller ])lauts. These places, in Mud Creek and Ash Creek canyons,are the homes of the mountain showtl or sewellel {Aplodontia major), acurious bob-tailed rodent resembling a, large muskrat, wliich lives in alabyrinth of subterranean passages in wet ground, and cuts and dragsto its burrows bundles of coarse plants on which it feeds. Weasels{ (() are usually found in the aplodontia coloniesand it is safe to assume that their presence there is the most seriousfactor in tlie life of the rightful owners of the land. STREAMS. The streams that come from glaciers are rapid, turbid, and muddy,and have cut deep V-shaped canyons down the steep slopes of themountain. Those that come from melting snow are clear as crystal
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Keywords: ., bookcentury1800, bookdecade1890, bookp, booksubjectnaturalhistory
