New Physical Geography: For Grammar and High Schools, and Colleges

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American Book Company, 1885 - Earth sciences - 144 pages
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Page 76 - Bennen advanced ; he had made but a few steps when we heard a deep, cutting sound. The snow-field split in two about fourteen or fifteen feet above us. The cleft was at first quite narrow, not more than an inch broad. An awful silence ensued ; it lasted but a few seconds, and then it was broken by Bennen's voice,
Page 76 - The head alone was preceded by a thick cloud of snow-dust; the rest of the avalanche was clear. Around me I heard the horrid hissing of the snow, and far before me the thundering of the foremost part of the avalanche. To prevent myself sinking again, I made use of my arms much in the same way as when swimming in a standing position. At last I noticed that I was moving slower ; then I saw the pieces of snow in front of me stop at some yards...
Page 118 - 'arth's orbit has an inclination towards changes,' you say." " The changes in the seasons, sir, are owing to ' the inclination of the earth's axis to the plane of its orbit.
Page 74 - I counted to-day forty-one distinct ledges or shelves of terrace embraced between our water-line and the syenitic ridges through which Mary River forces itself. These shelves, though sometimes merged into each other, presented distinct and recognisable embankments or escarps of elevation.
Page 56 - The temperature may be increased by mixing hydrogen and oxygen in the proportion of two volumes of the former to one of the latter, and burning it from a safety jet.
Page 96 - To explain the construction of the common barometer, and to shew that the mercury is sustained in it by the pressure of the air on the surface of the mercury in the basin.
Page 76 - I suddenly came to the surface again. I was on a wave of the avalanche, and saw it before me as I was carried down. It was the most awful sight I ever saw.
Page 103 - Accordingly, the most terrific that rage on the ocean have been known to spend their fury within or near its borders. Of all storms, the hurricanes of the West Indies and the typhoons of the China seas cause the most ships to founder. The stoutest men-of-war go down before them, and seldom, indeed, is any one of the crew left to tell the tale.
Page 10 - The vicissitudes of the seasons are caused by the annual revolution of the earth around the sun, together with the inclination of its axis to the plane of its orbit. It has already been explained, that the ecliptic is the plane of the earth's orbit, and is supposed to be placed on a level with the earth's horizon, and hence, that this plane is considered the standard, by which the inclination of the lines crossing the earth...
Page 69 - It has been calculated, for example, that a velocity of three inches per second will tear up fine clay, that six inches will lift fine sand ; eight inches, sand as coarse as linseed ; and twelve inches, fine gravel ; while it requires a velocity of twenty-four inches per second to roll along rounded pebbles an inch in diameter, and thirty-six inches per second to sweep angular stones of the size of a hen's egg.

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