. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 44 H- D. GOODALE. plumage except for a few feathers of head, throat and breast. No. 19 with one testis and this injured assumed the summer plumage in 1909. He did not long survive the second operation. Evidently the presence of the active (?) testis is necessary for the male to assume the summer plumage. The presence of the ligatured testis of No. I indicates that ligaturing is as effective as removal. I do not know the present condition of the testis of this male. There was no assumption of female characters by any of these
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 44 H- D. GOODALE. plumage except for a few feathers of head, throat and breast. No. 19 with one testis and this injured assumed the summer plumage in 1909. He did not long survive the second operation. Evidently the presence of the active (?) testis is necessary for the male to assume the summer plumage. The presence of the ligatured testis of No. I indicates that ligaturing is as effective as removal. I do not know the present condition of the testis of this male. There was no assumption of female characters by any of these males. Females: No. 4 and No. 24 were the only females that lived more than a few days after the operation. October 20, 1909,. FIG. 9. Female 4, castrated. they showed no marked modifications, though a small sample of No. 24*5 breast feathers, saved at that time, are now found to be quite like those of the male in summer plumage. Those of No. 4 were of the usual female type. Through the winter and spring, these two, with several other females were confined in a rather dark pen. During this time, only cursory observations were made, for it was believed that the experiments had failed. July 4, 1910, this flock, for the first time in several months, was. 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
