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Updated: July 12, 2025
All of them, too, have the same glorious voice, so that the young student is pretty sure to find it a matter of some difficulty to tell them apart. Yet there are differences of coloration which may be trusted as constant, and to which, after a while, the eye becomes habituated; and, at the same time, each species has a song and call-notes peculiar to itself.
So general are these deceptive resemblances throughout nature, that it is often difficult to determine whether sexual preferences or the preservation of mimetic forms has been most potent in moulding the form and coloration of species, and in some the two forces are seen to be opposed in their operation.
They are also interesting because they offer such illuminating examples of the truth that many of the most common and successful birds not merely lack a concealing coloration, but possess a coloration which is in the highest degree revealing. The coloration and the habits of most of these birds are such that every hawk or other foe that can see at all must have its attention attracted to them.
The point of entry, minute, but always easily recognizable by its brown coloration on the pale green background of the pea, has no fixed location; it may be at almost any point on the surface of the pea, but an exception is usually made of the lower half; that is, the hemisphere whose pole is formed by the supporting stem.
I have little doubt that when the broader explanation comes, which will satisfactorily explain the color scheme of the animal world, the idea of protective coloration will be found, not so much to have been wrong, as to have been but partial. It will be included under the broader principle which takes its place and will not be supplanted by it.
Thus in some butterflies that mimic the Heliconidae, the females only are mimetic, the males retaining the normal form and coloration of the group to which they belong.
It must be where she could sit and not show; where she could hide by just looking like what was near her, like a sand-colored grasshopper on the sand in the sun, or a walking-stick on a twig, or a butterfly on the bark of a tree. Yes, Mis's mate knew, in some natural wise way of her own, the secret of making use of what we call her "protective coloration."
Her brother had accused a young man of eighteen of having violated her, and on examination the hymen showed a biperforate conformation; there were two oval orifices, their greatest diameter being in the vertical plane; the openings were situated on each side of the median line, about five mm. apart; the dividing band did not appear to be cicatricial, but presented the same roseate coloration as the rest of the hymen.
The gem of the collection and one of the most precious pictures in Europe is 1290, on this wall, Fra Angelico's Coronation of the Virgin, which Vasari declared might have been painted by one of the blessed spirits or angels represented in the picture, so unspeakably delightful were their forms; so gentle and delicate their mien, so glorious their coloration.
On the other hand when the erasure has been so rough as to take off an important part of the material exposure to iodine, wetting, and drying result in less intensity to coloration on the parts erased, because the erasing in its mechanical action of carrying off parts of the paper removes also parts of the substance which in combination with iodine give birth to the blue tint.
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