PREFACE
I. COMMUNICATION AMONG THE ANCIENTS
II. SIGNALS PAST AND PRESENT
III. FORERUNNERS OF THE TELEGRAPH
IV. INVENTIONS OF SIR CHARLES WHEATSTONE
V. THE ACHIEVEMENT OF MORSE
VI. "WHAT HATH GOD WROUGHT?"
VII. DEVELOPMENT OF THE TELEGRAPH SYSTEM
VIII. TELEGRAPHING BENEATH THE SEA
IX. THE PIONEER ATLANTIC CABLE
X. A SUCCESSFUL CABLE ATTAINED
XI. ALEXANDER GRAHAM BELL, THE YOUTH
XII. THE BIRTH OF THE TELEPHONE
XIII. THE TELEPHONE AT THE CENTENNIAL
XIV. IMPROVEMENT AND EXPANSION
XV. TELEGRAPHING WITHOUT WIRES
XVI. AN ITALIAN BOY'S WORK
XVII. WIRELESS TELEGRAPHY ESTABLISHED
XVIII. THE WIRELESS SERVES THE WORLD
XIX. SPEAKING ACROSS THE CONTINENT
XX. TELEPHONING THROUGH SPACE