. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. m /. FIG. 2. Effect of thyroid administration on feather structure and pigmentation. crease in the number and distribution of the barbules on the barbs " following thyroid feeding. Later, these authors (Horning and Torrey, 1927) report that "as a rule, this pigment is carried by the barbules and limited by their ; Figure 2 shows feathers taken hen 4101 (fed 20 to 22 grams) after renewal of the feathers subsequent to thyroid feeding. Feather No. i shows the normal plumage, since it is a feather tha
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. m /. FIG. 2. Effect of thyroid administration on feather structure and pigmentation. crease in the number and distribution of the barbules on the barbs " following thyroid feeding. Later, these authors (Horning and Torrey, 1927) report that "as a rule, this pigment is carried by the barbules and limited by their ; Figure 2 shows feathers taken hen 4101 (fed 20 to 22 grams) after renewal of the feathers subsequent to thyroid feeding. Feather No. i shows the normal plumage, since it is a feather that was not molted. Feathers 2 to 7 show increasing amounts of pigmentation. All 8 feathers were taken from the back of Hen 4101, illustrated in Fig. i. The heavy condition of molt of the hen is noticeable in Fig. I (Note the similarity to a rapid molting high producer). The photographs of the hen were taken 70 days. 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
