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according Africa America amongst ancient angle animals appears Asia astronomical atmosphere axis basalt beds Bergmann calcareous called centre chains circle climate coasts colour considered contain countries crystals currents degrees direction distance earth east ecliptic elevated equal equator extent feet feldspar fluid fossil geographical globe granite Haiiy hemisphere Hippocrates horizon Iceland inhabitants iron islands kind lakes land latitude lava leagues less longitude marine masses measure meridian metal mineral moon motion mountains myriametres nature observed ocean parallel particles pass perpendicular Peru petrifactions Physique plains plane of projection polar pole porphyry present primitive principal principal meridian Ptolemy pyrites quantity quartz radius regions right line rivers rocks schist Siberia side sometimes species sphere stereographic projection strata substances subterraneous sulphur surface Sweden tains talc terrestrial theory tion toises torrid zone trace tufa vapours vegetable volcanic Voyage winds
Page 476 - aurora borealis, reflected by the snow, dispels the darkness of the polar night. The days for several months, though of a monotonous magnificence, astonishingly accelerate the growth of vegetation. In three days, or rather three times twenty-four hours, the snow is melted, and the flowers begin to blow.
Page 187 - greater number of the principal mountains have one of their sides very steep, and the other of a very " gradual slope.* The Alps, for example, are much more rapid in their descent on the Italian side than on that of Switzerland. On the contrary, the Dophrines, or Scandinavian Alps, have a much steeper declivity to the
Page 506 - that the grounds near Ravenna has sunk to such a degree, that the pavement of the cathedral is only six inches above the level of high water; but, at the same time, the land is extended in such a manner that this town, formerly situate in the midst of marshes, and canals, and furnished with an
Page 363 - causes which are local, and sometimes illusory. It is said that the Mediterranean Sea, in its upper part, has sometimes a purple tint. In the gulf of Guinea, the Sea is white, and around the Maldive Islands black. The Vermeille, or
Page 6 - could only be represented by a grain of sand less than one-twentieth of an inch in thickness. Irregularities so imperceptible do not deserve to be taken into consideration. We shall see, in the following Book, that the true differences which exist between our globe
Page 363 - a blue shade to distant mountains, and which give the atmosphere its azure hue. The rays of blue light, being the most refrangible, pass in the greatest quantity through the aquatic fluid, which, from its density and depth, makes them undergo a strong refraction. The other shades in the
Page 474 - the proximity of very high mountains, covered with perpetual snow; the trade winds, and the periodical inundations, equally contribute to diminish the heat. This is the reason why, in the torrid zone, we meet with all kinds of climates. The plains are burnt up by the heat of the sun. All the eastern coasts of the great continents,
Page 359 - true surface of our planet The only exception to this position, may perhaps be found in gulfs and inland seas, which have only a slight communication with the ocean. In these parts of the sea. the level of the water may sometimes be a little more elevated than in the ocean. It is alleged that the Dutch