Adaptive Coloration in AnimalsMethuen & Company, Limited, 1940 - 508 pages |
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Page 35
... shade , appear to be darkened . It is owing to the unequal reflection of light from its different surfaces that a solid object of uniform colour presents to the eye the well - known appearance of light and shade ; and it is almost ...
... shade , appear to be darkened . It is owing to the unequal reflection of light from its different surfaces that a solid object of uniform colour presents to the eye the well - known appearance of light and shade ; and it is almost ...
Page 36
... shade and light . This treatment by countershading , if properly carried out , as in Thayer's famous models , would render the bird almost com- pletely invisible from a short distance away . Now it is this very principle upon which the ...
... shade and light . This treatment by countershading , if properly carried out , as in Thayer's famous models , would render the bird almost com- pletely invisible from a short distance away . Now it is this very principle upon which the ...
Page 321
... shade , the colour serves to deepen and intensify that shade , thus producing the optical effect of a very dark clear - cut mass of shadow beneath the edge of a leaf . The colour - scheme is , in fact , a total inversion of that shown ...
... shade , the colour serves to deepen and intensify that shade , thus producing the optical effect of a very dark clear - cut mass of shadow beneath the edge of a leaf . The colour - scheme is , in fact , a total inversion of that shown ...
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