Selected Sketches of Science, Art, and Literature

Selected Sketches of Science, Art, and Literature

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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. 1876 edition. Excerpt: ... out amid this tangled thicket, or here and there' we may discern a Variety'dffsealanenioiies, their sof't'feathe'ry fringes fully expanded. ' " ' _ This wonderful growth over which wevhnve imagined ourselves to be_sailing' is the top of-a coral wall. ' Reaching the s'irFaoe'of' the' water at7in'tervals, it forms little rocky islands here and there, divided from"each other byopen channels, through some of _which vesselsof considerahle size may pass. This wall is'in fact a repi tition of the-same process as that which has formed theinner row of keys, thongh in a' more incomplete 'stage'; 'it is built up the coral animals 'from the ' sea bottom. Whcrever circninstanccs are most favorable: to thier' developn1ent,"there they "g"rmv most rapidly. 'In shah' spots they'bring the wall' to the sea level sooner thaninothers." ' ' "-' "" ' ' " "" ' ' ' ' This done, however, the work' of the coral animals cease, because they cannot live out of thc' water: "But in consequence of a process of decay and decomposition, wlii: ' l: I ..slj1%l: l.: ti.4'1:31.: z5.ii;.'-.v'vlien we examine the structure and life of the miter; t'her'nsel'ves, 'such a wall--or coral reef, as it is called--is surrounded by corai sand and fragments worn away from it by the action of the sea. ' Materials of this sort, mixed with sea-weed, broken shells, &e., soon gather upon the top of the reef, wherever the coral growth has brought it to the sea level, By degrees a soil is collected upon such spots, more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • United States
  • English
  • black & white illustrations
  • 1236875346
  • 9781236875341