. Results of a biological survey of mount Shasta, California. K. Fisher. Thomomys monticola Allen. Sierra Pocket (TOi^her. Abundant throughout theboreal slopes of the mountain, from the lowerpart of the Canadian zone to above timberline. In the dark forests ofShasta firs their mounds were seen wherever there was enough smallvegetation to furnish food, and were commonest along the streams andabout the edges of marshy idaces, where i)lant life is abundant and luxu-riant. Above the line of continuous timber their mounds were noticedon many of the pumice slopes between the altitudes of 8,000 and 0
. Results of a biological survey of mount Shasta, California. K. Fisher. Thomomys monticola Allen. Sierra Pocket (TOi^her. Abundant throughout theboreal slopes of the mountain, from the lowerpart of the Canadian zone to above timberline. In the dark forests ofShasta firs their mounds were seen wherever there was enough smallvegetation to furnish food, and were commonest along the streams andabout the edges of marshy idaces, where i)lant life is abundant and luxu-riant. Above the line of continuous timber their mounds were noticedon many of the pumice slopes between the altitudes of 8,000 and 0,000feet. Above the head of Squaw Creek a small colony was found at analtitude of 8,300 feet, and another between 8,900 and 9,000 feet. Onthe east side of Mud Creek Canyon they were seen at 8,800 feet, and onthe west side at 8,900 feet. On our trip around the mountain near 96 NORTH A:\rEKr(AN FAUNA. [no. 16. tiinberlinc, tlu liiitcr ])iirt of .Inly, tlicir were fouiid in almostevery ])\iuv wheic the soil was lUcp eiioiiglilor the animals to work;. FKt. :!1.— Winter eailli plii^s uf j)iickit licr.
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Keywords: ., bookcentury1800, bookdecade1890, bookp, booksubjectnaturalhistory
