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animals anticyclone Arctic Atlantic barometer bays becomes belt Bermuda blow bottom calcite Cape Ann carbonic acid cause clay cliffs climate clouds coast cold colors cool coral crust currents depth dew point Diagram difference earth elevation Equator eruption fall feet feldspar flows fragments glacier Globigerina ooze Greenland ground heat hemisphere hence humid illustrate irregular islands Isothermal chart isotherms lakes land latitude lava layers less light miles minerals moraine move movement nearly night northern northern United ocean ocean currents particles partly pass Physical Geography plain plants poles pressure quartz radiation rain rays reach region rise river rock salt sand season sediment shore showing side slope slowly snow sometimes southern southern hemisphere storms stream summer surface temperate temperature terminal moraine tide tion tropical valley vapor volcanoes warm warmer waves weather winds winter zone
Page 224 - (SiO 2 ), and found in all granites and sandstones, as well as in many other rocks and most soils. It is so hard that it cannot be scratched with a knife, and it will cut glass. Very often it is found in perfect crystalline form, sides and three of the pyramid faces.
Page 241 - CENOZOIC TIME. Age of Mammals. MESOZOIC TIME. Age of Reptiles. PALEOZOIC TIME. The age of Invertebrates. In part AZOIC TIME. No fossils known Pleistocene or Quaternary.
Page 368 - regard it as incomparably superior to any other book on the subject. Previous to its publication, this most important and interesting department of science was seriously handicapped by the lack of a text suitable for use in secondary schools. Now no other subject taught in a high school can boast of a more adequate text than Tarr's Physical Geography. CA Byram, Principal, High School,
Page 198 - FIG. 93. A section of the ocean from New York to Bermuda, showing the temperature at various depths (fathom = (i feet). Generally the temperature of the ocean descends rather rapidly just
Page 35 - In the air, nitrogen (and also argon) is a very inert element, which acts as an adulterant to the active oxygen, in a manner similar to the adulteration or weakening of a solution of salt when water is added to it. It is oxygen that is doing the work in the bodies of animals, and
Page 114 - Diagram showing theoretical movement of air (by arrows), and other conditions, in a low pressure or storm area. pressure, and away from areas of high barometer. Hence as such areas move across the country, the winds must blow toward a region of low barometer and away from that of high, in the attempt to equalize the pressure that has been disturbed. Since in the high-pressure areas, air .•:•::•. CIRRUS CLOUDS
Page 22 - globe. or of any spherical body, showing the way in which the axis maintains its position while the earth moves, and the hemispheres face toward and away from the sun in the different seasons. tion that would exist if the earth's axis were at right angles to the plane of revolution. Gradually the sun takes a lower position in the heavens, the day shortens, and midwinter is reached, while at the
Page 240 - found in most geologies. THE EARTH'S CRUST TABLE OF GEOLOGICAL AGES 239 1 Invertebrates of course continue down to the very present; but until the Devonian they were the most important group. The same is true of fishes, which begin to be abundant in the Devonian, but continue down to the present.