Scientific American Supplement, No. 829, November 21, 1891 by Various
page 7 of 146 (04%)
page 7 of 146 (04%)
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Congressional troops failed to capture ViƱa del Mar, but eventually
cut the railway line a few miles out, and crossed over to the back of Valparaiso, which was soon captured.--_The Graphic._ * * * * * THE SUN'S MOTION IN SPACE. By A.M. CLERKE. Science needed two thousand years to disentangle the earth's orbital movement from the revolutions of the other planets, and the incomparably more arduous problem of distinguishing the solar share in the confused multitude of stellar displacements first presented itself as possibly tractable a little more than a century ago. In the lack for it as yet of a definite solution there is, then, no ground for surprise, but much for satisfaction in the large measure of success attending the strenuous attacks of which it has so often been made the object. Approximately correct knowledge as to the direction and velocity of the sun's translation is indispensable to a profitable study of sidereal construction; but apart from some acquaintance with the nature of sidereal construction, it is difficult, if not impossible, of attainment. One, in fact, presupposes the other. To separate a common element of motion from the heterogeneous shiftings upon the |
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