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Updated: July 12, 2025
At least it is certain that, in very many of the butterflies and moths, the attractive coloration is chiefly displayed when they are moving actively about; and when they alight and their enemies can the more easily capture them, they conceal their brilliant colorings. Most butterflies are very brilliant on the upper surface of the wings and very much duller on the under surface.
The mouth of the Rio Negro is indeed in the latitude of 3 degrees 9 minutes; but in this interval the black and white waters are so singularly mingled in the forests and the savannahs, that we know not to what cause the coloration must be attributed. The waters of the Cassiquiare, which fall into the Rio Negro, are as white as those of the Orinoco, from which it issues.
Scolopax frenata, tail feathers of; Scolopax gallinago, drumming of. Scolopax javensis, tail-feathers of. Scolopax major, assemblies of. Scolopax Wilsonii, sound produced by. Scolytus, stridulation of. Scoter-duck, black, sexual difference in coloration of the; bright beak of male. Scott, Dr., on idiots smelling their food. Scott, J., on the colour of the beard in man.
A long residence at the cataracts of the Orinoco, the Nile, and the Rio Congo, and an examination of the circumstances attendant on this phenomenon of coloration, could alone lead to the complete solution of the problem we have discussed. Is this phenomenon independent of the nature of the rocks?
Of course, many of these fall to the ground and take root. If the protective coloration of the nuts, then, were effective, it would defeat a purpose which every tree and shrub and plant has at heart, namely, the scattering of its seed. I notice that the button-balls on the sycamores are protectively colored also, and certainly they do not crave concealment.
The grouse relied on their protective coloration, just as when menaced by the beasts of prey. An otter, rarely indeed seen in daylight, hovered a moment beside a little stream to consider them; and a coyote, greatest of all cowards, lingered in their trail until they were within fifty feet of his grey form, then trotted shyly away. "We won't starve for meat, that's certain," Ben informed her.
The coloration is determined by comparison with a scale having eleven degrees of intensity upon it. Compared with Schoenbein's ozonometer, the results are in general directly opposite. The thallium papers show that the greatest effect is in the daytime, the iodide papers that it is at night. Yearly curves show that the former generally indicate a rise when the latter give a fall.
"If you will look at the maps following page 554 of Hazen's 'Europe since 1815, or any other standard colored map showing Africa and Asia in 1884, you will see that, but for a few rare spots of coloration, the whole continent of Africa is pure white. Crossing the Red Sea into Arabia, Persia, Mesopotamia and Asia Minor, you will find the same or rather a more complete lack of color.
Coloration, protective, in birds. Colour, supposed to be dependent on light and heat; correlation of, with immunity from certain poisons and parasites; purpose of, in lepidoptera; relation of, to sexual functions, in fishes; difference of, in the sexes of snakes; sexual differences of, in lizards; influence of, in the pairing of birds of different species; relation of, to nidification; sexual differences of, in mammals; recognition of, by quadrupeds; of children, in different races of man; of the skin in man.
In South America concealing coloration plays no more part in the lives of the adult deer, the tamandua, the tapir, the peccary, the jaguar, and the puma than it plays in Africa in the lives of such animals as the zebra, the sable antelope, the wildebeeste, the lion, and the hunting hyena. Next day we spent ascending the Sao Lourenco.
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