Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 357
ture of an experiment with an obsti-nate cork that flies in the face of any one whotries to compel it to go into the neck of a bot-tle. The more you try to blow it in, the moreit leaves the bottle. You can try this with anylarge bottle and a cork small enough to fitvery loosely in its neck. Holding… … from its place in the neck. Instead of a cork,the experiment may be successfully tried witha small ball of pith, or with one of paper. THE MAGIC TRIANGLE. A very interesting experiment may be per-formed as follows. With a wet lead-pencilpoint draw on a piece of thick paper a triangle— whether the…
Children's literature
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