THE MOON SEEN THROUGH LORD ROSSE'S TELESCOPE.
MELTING OF A WATCH BY LIGHTNING.
FIRE-PROOF HOUSE ON PUTNEY HEATH.
SIR DAVID BREWSTER'S KALEIDOSCOPE.
LORD ROSSE'S LEVIATHAN TELESCOPE.
ORIGIN OF REFLECTING LIGHTHOUSES.
ORIGIN OF THE SOCIETY OF ARTS.
TRANSPORTATION OF THE COFFEE-TREE.
THE ARTESIAN WELL OF GRENELLE, AT PARIS.
NECESSITY THE MOTHER OF INVENTION.
THE BURNING MIRRORS OF ARCHIMEDES.
MAGNETIC CORRESPONDENCE IN THE SEVENTEENTH CENTURY.
NAVIGATION BEFORE THE COMPASS.
SEMAPHORE v. ELECTRIC TELEGRAPH.
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