



Produced by Chris Curnow, Albert Laszlo (bertzi), Charlie
Howard, and the Online Distributed Proofreading Team at
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[Illustration: THE WRIGHT AEROPLANE IN FRANCE IN 1908.

It will be seen that there are two passengers on the aeroplane, one
being Mr. Wilbur Wright, the other a pupil.]




    EVERY-DAY SCIENCE

    BY
    HENRY SMITH WILLIAMS, M.D., LL.D.

    ASSISTED BY
    EDWARD H. WILLIAMS, M.D.

    VOLUME VII.

    THE CONQUEST OF TIME AND SPACE

    ILLUSTRATED

    [Illustration]

    NEW YORK AND LONDON
    THE GOODHUE COMPANY
    PUBLISHERS MDCCCCX




    Copyright, 1910, by THE GOODHUE CO.

    _All rights reserved_




CONTENTS


  CHAPTER I

  THE CONQUEST OF THE ZONES

  Geographical knowledge of the ancient Egyptians, p. 5--The
  mariner's compass, p. 7--Reference to the thirty-two points
  of the compass by Chaucer, p. 9--Halley's observations on
  the changes in the direction of the compass in a century,
  p. 10--Deviation of the compass, p. 11--The voyage of the
  _Carnegie_, the non-magnetic ship, p. 12--The "dip of the needle"
  first observed by Robert Norman, p. 13--The modern compass
  invented by Lord Kelvin, p. 14--Sailing by dead reckoning, p.
  14--The invention of the "log," p. 15--The modern log