. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIGHT IN AVIAN PHOTOPERIODISM 607 the birds on May 29 ( milligrams) ; its body weight was grams, which was grams less than its initial weight. DISCUSSION AND CONCLUSIONS From the results of their studies Kirkpatrick and Leopold (1952) and Jenner and Engels (1952) assigned an inhibitory role to the long dark period of short winter days. On the basis of the experiments reported here it seems unlikely CMS 21 20 13 18 I O 17 > 16 Q O CO Junco hyemalis — Apr. 24 - May 29. I2L-20D • • (10) I6L- I6D 0) CD (8) I6L-2
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIGHT IN AVIAN PHOTOPERIODISM 607 the birds on May 29 ( milligrams) ; its body weight was grams, which was grams less than its initial weight. DISCUSSION AND CONCLUSIONS From the results of their studies Kirkpatrick and Leopold (1952) and Jenner and Engels (1952) assigned an inhibitory role to the long dark period of short winter days. On the basis of the experiments reported here it seems unlikely CMS 21 20 13 18 I O 17 > 16 Q O CO Junco hyemalis — Apr. 24 - May 29. I2L-20D • • (10) I6L- I6D 0) CD (8) I6L-22D G—'-e (II) I6L-32D O—O (12) <D -20% O -24%. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
