 undergoes slight changes, almost any color can be produced. This is believed to be the origin of many of the glossy or metallic tints of insects, as well as of those of the feathers of some birds. The iridescent colors of the wings of dragon-flies are...  The American Naturalist - Page 6581877Full view - About this book
 | 1877 - 780 lehte
...color of that neutralized is seen ; and, as the thickness of the film or the fineness of the striae undergoes slight changes, almost any color can be...caused by the superposition of two or more transparent lamell:c ; while the shining blue of the purple-emperor and other butterflies and the intensely metallic... | |
 | 1877 - 784 lehte
...color of that neutralized is seen ; and, as the thickness of the film or the fineness of the strife undergoes slight changes, almost any color can be...caused by the superposition of two or more transparent lamella3 ; while the shining blue of the purple-emperor and other butterflies and the intensely metallic... | |
 | Sir George Grove, David Masson, John Morley, Mowbray Morris - 1877 - 572 lehte
...as the thickness of the film or the fineness of the stria; undergo slight changes almost any colour can be produced. This is believed to be the origin...those of the feathers of some birds. The iridescent colours of the wings of dragon-flies are caused by the superposition of two or more transparent lamellae... | |
 | 1877 - 520 lehte
...as the thickness of the film or the fineness of the stria¿ undergo slight changes almost any colour can be produced. This is believed to be the origin of many of the may be found explained in any treatise glossy or metallic tints of insects, as well as of those of... | |
 | Alfred Russel Wallace - 1878 - 416 lehte
...of the film or the fineness of the strioe undergo slight changes, almost any colour can be produeed. This is believed to be the origin of many of the glossy or metallic tints of insects, as well as those of the feathers of some birds. The irideseent colours of the wings of dragon-flies are caused... | |
 | 1890 - 424 lehte
...colours,"—especially with reference to Lepidoptera and other insects. For instance, he conjectures that " many of the glossy or metallic tints of insects, as well as those of the feathers of some birds," are due to interference colours ; and states also that " The... | |
 | Alfred Russel Wallace - 1891 - 518 lehte
...as the thickness of the film or the fineness of the striae undergo slight changes, almost any colour can be produced. This is believed to be the origin...the glossy or metallic tints of insects, as well as those of the feathers of some birds. The iridescent colours of the wings of dragon-flies are caused... | |
 | 1877 - 1072 lehte
...of that neutralized is seen ; and as the thickness of the film or the fineness of the stria? undergo slight changes almost any color can be produced. This...caused by the superposition of two or more transparent lamella? ; while the shining blue of the purple-emperor and other butterflies, and the intensely metallic... | |
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