Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 399
the balloon, we can distinguish everyfeature of its organism, thanks to this improvised magnifier.This .little apparatus may also serve to increase the in-tensity of a luminous focus of feeble power, such as a 42 LIGHT. lighted candle. It is often employed in this manner bywatchmakers. If a bottle… … A simpJe microscope foimed with a glass balloon full of water. ignite. We have succeeded in this experiment evenunder an October sun, and still more readily in warmweather. In the Conservatoire des Arts in Paris a visitor willalways notice a number of people looking at the mirrorsin the optical…
Scientific recreations
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