. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 257. Sections through scales of Anolis showing the condition of the chromatophores, A, in the brown state and B, in the green state. From ;* Supplementing the contribution of the chromatophores themselves to the coloration of the vertebrate there is often, as in the cephalopods, an immobile layer of whitish or yellowish pigment. This pigment is responsible entirely for the tint of the animal when the active chromatophores contribute little or nothing, or it cooperates with the chromatophores
. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. Fig. 257. Sections through scales of Anolis showing the condition of the chromatophores, A, in the brown state and B, in the green state. From ;* Supplementing the contribution of the chromatophores themselves to the coloration of the vertebrate there is often, as in the cephalopods, an immobile layer of whitish or yellowish pigment. This pigment is responsible entirely for the tint of the animal when the active chromatophores contribute little or nothing, or it cooperates with the chromatophores in producing the normal coloration. In species such as the lizard, Anolis, the bodies of the melano- phores lie beneath such a passive layer of pigment. As the animal darkens in response to appropriate stimulation the melanin streams within melano-. 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 Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders
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