NEW YORK
CHARLES E. MERRILL COMPANY

Copyright, 1911
By Charles E. Merrill Co.

CONTENTS

Chapter Page
I.Introduction[7]
II.The Printing Press[15]
III.The Steam Engine[30]
IV.Electricity: The Telegraph and the Telephone[56]
V.Electricity: Lighting, Transportation, and Other Uses[78]
VI.The Discovery of America[92]
VII.Weapons and Gunpowder[108]
VIII.Astronomical Discoveries and Inventions[127]
IX.The Cotton-gin[138]
X.Anæsthetics[147]
XI.Steel and Rubber[154]
XII.Stenography and the Typewriter[164]
XIII.The Friction Match[169]
XIV.Photography[177]
XV.Clocks[182]
XVI.Some Machines[188]
The Sewing Machine[188]
The Reaper[192]
Spinning and Weaving Machines[197]
XVII.Aeronautics[203]

GREAT INVENTIONS AND DISCOVERIES

CHAPTER I