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ORIGIN OF THE TELEGRAPH.
NECESSITY THE MOTHER OF INVENTION.
THE BURNING MIRRORS OF ARCHIMEDES.
MAGNETIC CORRESPONDENCE IN THE SEVENTEENTH CENTURY.
NAVIGATION BEFORE THE COMPASS.
SEMAPHORE v. ELECTRIC TELEGRAPH.
| PAGE | |
| Alchemists, The Last of the | 110 |
| Alpine Perils—Professor Forbes on | 30 |
| Amber an Article of International Trade | 66 |
| Amsterdam Pile, The | 150 |
| Antiquity of Lightning Conductors | 67 |
| Antiquity of Refined Sugar | 87 |
| Arkwright's Spinning Frame | 128 |
| Art of Stereotype, The | 105 |
| Artesian Well of Grenelle, The | 132 |
| Ascent of the Jungfrau Alp, by Forbes, &c. | 44 |
| Astronomical Shoemaker, An | 51 |
| Babbage's Calculating Machine | 59 |
| Balloon Travelling, Rate of | 103 |
| Balloon Voyage from London to Nassau | 86 |
| Banks', Sir Joseph, Balance | 37 |
| Benefit of a Wife to an Author | 40 |
| Black, Dr., The Death of | 133 |
| Brindley the Engineer | 43 |
| Brongniart's Early Life | 33 |
| Brougham's, Lord, Scientific Blunders | 90 |
| Buckingham Palace Gates | 37 |
| Burning Mirrors of Archimedes, The | 140 |
| Carnot when a Child | 23 |
| Catching Electric Eels |
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