The Writings of John Fiske Volume 14

The Writings of John Fiske Volume 14

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...motion. In like manner, when we come to study planetary evolution, we shall find strong reasons for believing that on small bodies, like the moon and the asteroids, which have rapidly lost their internal heat, there has been but little chance for such complex secondary rearrangements as have occurred upon our relatively large and slowly cooling earth. Even after the attainment of solidity, however, a new supply of motion from without may cause some further redistribution without causing the body to relapse into fluidity. Thus a wrought-iron rail, which when new is tough and fibrous, gradually acquires the brittle crystalline texture of cast-iron, under the influence of the vibrations communicated by the cars which pass over it. And the magnetization of steel rods, when fastened in the meridian and frequently jarred, is cited by Mr. Spencer as a fact of like import. Many other excellent illustrations, gathered from physics and chemistry, may be found in the thirteenth chapter of the second part of" First Principles." 1 If now we contemplate in a single view the i Throughout this work, reference is made only to the second and rewritten edition of First Principles, London, 1867. general principles above illustrated, we shall seem for a moment to have got into difficulties. Unavoidably, in using the word Evolution, we have suggested the idea of increase in structural complexity; and such increase of course implies a considerable amount of permanent internal rearrangement as consequent upon the primary process of integration. Yet under the conditions thus far studied, we find that " on the one hand, a large amount of secondary redistribution is possible only where there is a great quantity of contained motion; and, on the more

Product details

  • Paperback | 90 pages
  • 189 x 246 x 5mm | 177g
  • United States
  • English
  • black & white illustrations
  • 1236886399
  • 9781236886392