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Examination, however, shows that the amount of motion in the direction in which the wind is blowing is very slight. We may say, indeed, that the essential feature of a wave is found in the transmission of impulse rather than in the movement of the fluid matter. A strip of carpet when shaken sends through its length undulations which are almost exactly like water waves.

Then bending graciously, as though the persons addressed were of dwarfish stature, "'Scuse me," he said, "but kin I please be so p'lite as to 'quiah you' name?" For a moment he listened attentively, then nodded, and, returning with the same aristocratic undulations to an imaginary doorway near the freezer, "Misto an' Missuz Orlosko Rinktum!" he proclaimed, sonorously.

Thus Fizeau, the first to have this idea, says: "A ray of light, with its series of undulations of extreme tenuity but perfect regularity, may be considered as a micrometer of the greatest perfection, and particularly suitable for determining length."

Directly in our front lay an easy, flattish ground, with moderate undulations, densely wooded with such trees as I had already seen; but beyond it, about three miles from camp, the face of the mountain-top, towering to a great height, stood frowning over us like a huge bluff wall, which at first sight it appeared quite impossible any camel could surmount.

As the floor of valleys is raised by the denudation and washing down of the mountains, what is average will rise at the expense of what is great. The exceptional will disappear. A plateau with fewer and fewer undulations, without contrasts and without oppositions, such will be the aspect of human society.

God is 'the Father of lights. The sun and all the stars are only lights kindled by Him. It is the very crown of revelation that 'God is light, and in Him is no darkness at all. Light seems to the unscientific eye, which knows nothing about undulations of a luminiferous ether, to be the least material of material things. All joyous things come with it.

Madame de Bergenheim seemed to pay very little attention to the words addressed her; her uneasy glances wandered in every direction, into the depths of the bushes and the slightest undulations of the ground. Gerfaut understood this pantomime. He glanced, in his turn, over the place, and soon discovered at some distance a more propitious place for such a conversation as theirs.

For, as the waves which permeate the ether could only be situated as they actually are, at any moment, through past processes, each one of which is consequently indicated by those ethereal waves, so also there can be but one series of events in the future, as the sequel of the relations actually indicated by the ethereal undulations.

At the bottom of one of these undulations, among a number of skeleton trees, that afforded no shade, we discovered the elephants, standing in the high withered grass, that entirely concealed all but the upper portion of their heads; they were amusing themselves by tearing up the trees, and feeding upon the succulent roots.

All the mountains between Donkia pass and the Arun were comparatively gently sloped, and of a yellow red colour, rising and falling in long undulations like dunes, 2000 to 3000 feet above the mean level of the Arun valley, and perfectly bare of perpetual snow or glaciers.