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