Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 220
he actionof moisture, the man with the umbrella sallies out; when the cord becomesdry, the man re-turns indoors andthe woman appears.These simple,pleasing, a n d in-structive toys illus-trate the action ofmoisture on certainporous bodies, andare of interest, ifnot of actual use, to the… … Sensitive Leaf. igS EXPERIMENTAL SCIENCE. skin, or even of gelatine, printed in some fantastic design,that of the mermaid being the favorite. When the leaf islaid upon the palm of the hand, the moisture of thehand is absorbed by one side of the leaf, and more in someplaces than in others, owing to…
Physics · Lantern projection · Electric apparatus and appliances
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