Adaptive Coloration in AnimalsMethuen, 1957 - 508 pages |
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Page 38
... tone from dark above to light beneath . As she crouches motionless in the field with her long ears pressed down ... tone . If in such a pattern the relative proportion of black to white be increased , or decreased , then the resulting ...
... tone from dark above to light beneath . As she crouches motionless in the field with her long ears pressed down ... tone . If in such a pattern the relative proportion of black to white be increased , or decreased , then the resulting ...
Page 52
... tone between the curtain and the rest of the visual field behind it — in this case , as presented by a black screen silhouetted against the brightly illuminated view outside . From what has been said , it follows that while a white ...
... tone between the curtain and the rest of the visual field behind it — in this case , as presented by a black screen silhouetted against the brightly illuminated view outside . From what has been said , it follows that while a white ...
Page 55
... tone , except at its edge . The passage from light to dark tones , and from warm to cold hues , is gradual , and delicately graded . Gentle gradations of tone , easy transitions of colour - these are characteristic of simple rounded ...
... tone , except at its edge . The passage from light to dark tones , and from warm to cold hues , is gradual , and delicately graded . Gentle gradations of tone , easy transitions of colour - these are characteristic of simple rounded ...
Contents
THE METHODS BY WHICH CONCEALMENT | 5 |
ADAPTIVE RADIATION IN COLOUR RESEMBLANCE II | 11 |
COLOUR RESEMBLANCE DUE TO CHOICE OF APPROPRIATE BACKGROUNDS | 18 |
Copyright | |
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adaptive coloration advertisement Africa antennæ aposematic appearance attack attitude background bark bees beetles behaviour birds body brown Bufo butterflies camouflage caterpillars chromatophores closely colour colour-scheme concealing coloration conspicuous contrast correlated countershading crab Crustacea cryptic coloration cryptic resemblance dark deceptive device display disruptive pattern dorsal eaten Edward Poulton effect eggs enemies environment evidence example exhibited experiments fact feeding figs fishes frogs function geckos genus grasshoppers green grey groups of animals habits head Hymenoptera illustrated insects instance instinct Journ larva larvæ later leaf Lepidoptera light lizards London mammals mantis markings mimetic mimicry mimics moths nature nest Nightjars observed optical Orthoptera Pará patches pigment Polychrus marmoratus Poulton predators prey principle Proc procryptic protective referred relation remarkable rest seen shade shadow significant similar snakes species specimens spider Stone-Curlew striking surface surroundings tail tegmina toads tone tropical various visual warning coloration wings yellow Zool