. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. White-throated Wood Rat in California 33 100 I I I I I I ' â I ' â I â ' I ' ' I ' ' I ' ' I ' ' I ' ' I u- 70 O LJ Q 60. 6 12 6 12 6 12 6 12 6 12 6 12 6 PM AM PM . AM PM AM PM Figure 3. Graph of thermograph recordings within a wood rat burrow compared to the air temperature outside the burrow. The period is from 6:00 PM, 20 March 1959, to 10:00 AM, 23 March 1959. exposed fully to solar radiation. All temperatures in the following discussion are degrees Fahrenheit. During the night of 20 March
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. White-throated Wood Rat in California 33 100 I I I I I I ' â I ' â I â ' I ' ' I ' ' I ' ' I ' ' I ' ' I u- 70 O LJ Q 60. 6 12 6 12 6 12 6 12 6 12 6 12 6 PM AM PM . AM PM AM PM Figure 3. Graph of thermograph recordings within a wood rat burrow compared to the air temperature outside the burrow. The period is from 6:00 PM, 20 March 1959, to 10:00 AM, 23 March 1959. exposed fully to solar radiation. All temperatures in the following discussion are degrees Fahrenheit. During the night of 20 March, the burrow temperature was 25 degrees warmer than air temperature at 4:00 AM. During the 10 hours previous to this, the burrow temperature had declined only 18 degrees while the outside air fell 28 degrees. Between 4:00 PM and 8:00 PM 21 March, the air temperature fell 34 degrees, but the burrow temperature declined only 2 degrees and was 12 degrees warmer than outside at 8:00 PM. During the remainder of this night, the burrow was considerably warmer than outside, and when the minimum (38 at 4:00 AM) outside was reached, the burrow. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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