. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 362 J. HOLMES MARTIN. after thyroid administration. Feathers 2 to 5 (Fig. 2) are com- pletely silky in appearance, there being on observation with the naked eye no apparent interlocking of barbules on adjacent barbs as illustrated and described by Lloyd-Jones (1915). Feathers 6 and 7 show a slight interlocking close to the shaft at its distal FIG. 3. Hen 4101 showing depigmented feathers under left wing (also abundant under right wing and on back). After subsequent molt, feathers in these same areas were normally barre
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 362 J. HOLMES MARTIN. after thyroid administration. Feathers 2 to 5 (Fig. 2) are com- pletely silky in appearance, there being on observation with the naked eye no apparent interlocking of barbules on adjacent barbs as illustrated and described by Lloyd-Jones (1915). Feathers 6 and 7 show a slight interlocking close to the shaft at its distal FIG. 3. Hen 4101 showing depigmented feathers under left wing (also abundant under right wing and on back). After subsequent molt, feathers in these same areas were normally barred when observed, Aug. 30, 1926. Feather 8 had obviously commenced its growth prior to thyroid feeding as the distal end, including the first three black bars and two white bars, is normal in every respect (the portions missing in feathers i and 8 were removed for microscopical examination). The abnormally wide white bar in feather 8 resulted from thyroid feeding. This white bar and the remaining proximal portion of the feather are of the silky nature indicating the absence of inter- locking barbules. A microscopical examination reveals the ab- sence of the hooked haemules of the barbules in the lower silky-. 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
