The Geographical Journal, Volumen13Royal Geographical Society., 1899 Includes the Proceedings of the Royal Geographical Society, formerly published separately. |
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Página 229 - Sections along any of the edges of any of the pentagons and through the center of the pentagonal dodecahedron divide it into equal and similar halves. So, also, do sections from the center of the pentagons to any of the angles, and likewise sections across the pentagons from alternate angles. Each face of a pentagonal dodecahedron may therefore be divided by fifteen planes of symmetry. A sphere may be described upon the pentagonal dodecahedron, so that all the corners (or, to use the correct term,...
Página 677 - MONEY, WEIGHTS, and MEASURES of the CHIEF COMMERCIAL NATIONS IN THE WORLD, with the British Equivalents.
Página 309 - For from what part of the earth that men dwell, either above or beneath, it seemeth always to them that dwell that they go more right than any other folk. And right as it seemeth to us that they be under us, right so it seemeth to them that we be under them.
Página 516 - Greenwich (13° 40' east of Paris), shall run thence to the south-east until it meets the 24th degree of longitude east of Greenwich (21° 40...
Página 515 - The line of frontier shall start from the point where the boundary between the Congo Free State and French territory meets the waterparting between the water-shed of the Nile and that of the Congo and its affluents. It shall follow in principle that water-parting up to its intersection with the 1 1th parallel of north latitude.
Página 242 - The polar flattening is barely recognizable, and the difference between sea bottom and mountain summit is marked only by variations in the thickness of a line. The diagram illustrates the insignificance of the deformations required ; and that crustal disturbance occurs much deeper than the layer with which the tetrahedral theory is concerned is shown by the fact that the estimated center of origin of the Lisbon earthquake lies far below.
Página 224 - ... is clearly revealed by three striking facts. GEOGRAPHICAL SYMMETRY. Two of these facts are stated in every geographical text-book. They are evident on the most casual examination of a map. The first is the concentration of land in the Northern and of sea in the Southern Hemisphere. The second is the triangular shape of the geographical units. The continents are triangular, with the bases to the north. The oceans are triangular, with the bases to the south. Accordingly the land forms an almost...
Página 239 - It has unquestionably remained as a solid impassive block which has dominated the whole geological history of northern Europe. South of the Scandinavian coign are the transverse east and western chains of the Alps and the Atlas, with the Mediterranean trough between; and far to the south we have the old plateau of South Africa. Let us now go 120° westward to the American zone. It begins with another block of old Arclwan rocks, forming what Suess has called the
Página 229 - ... first thought. That secular contraction is the direct cause of the great fold-mountain systems is however less widely believed by geologists than it once was; but it may have an important influence in determining their direction. The trend of the great chains of fold mountains is to us a significant question, because there is much truth in the phrase, proverbial since its use in 1682 by Burnet in his " Theory of the earth," which describes the mountain chains as the "backbones of the continents.
Página 232 - For the' land occurs as three triangular equidistant continents, -united above into a ring and tapering southwards; there is a great excess of water in the southern and of land in the northern' hem'ispher'e; and land and water are antipodal, since in a tetrahedron a corner is always opposite a flat face. But of course in the earth the faces are not flat, but are convex. If the flat faces be replaced by projecting pyramids with curved faces, so that the form is globular, the arrangement of land and...