Adaptive Coloration in AnimalsMethuen & Company, Limited, 1940 - 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 |
CONCLUSION | 15 |
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advertisement Africa antennæ aposematic aposematic animals appearance attack attitude background bark bees behaviour birds body brown Bufo butterflies camouflage caterpillars chromatophores closely colour colour-scheme concealing coloration conspicuous contrast correlated countershading crab creatures Crustacea cryptic coloration dark deceptive defence device display disruptive pattern distasteful dorsal eaten Edward Poulton effect eggs enemies environment evidence example exhibited experiments fact feeding fishes frogs function genus grasshoppers green grey ground group of animals habits head hind Hingston Hymenoptera illustrated insects instance instinct larva larvæ later leaf legs Lepidoptera light lizards mammals markings mimetic moths nature nest Nightjars observed optical Orthoptera patches pigment Plate Portuguese East Africa Poulton predators predatory prey principle procryptic protective referred relation remarkable resemblance rest seen shade shadows significant similar snakes species specimens spider spots Stone-Curlew striking surface surroundings tail tegmina tion toads tone various warning coloration widely wings yellow