Gregg, J. B. [from old catalog] · Ada, Ohio, The University herald press · leaf 67
rike it as before, anddraw the bristle quickly across a pieceof smoked glass. (3.) Clamp a plate as shown in thethe figure; sift fine sand over it, anddraw a bow across the edge of theplate. Make different figures bytouching the plate with the fingers. 2. Transmission of Sound. (1.) Placea bell… … Bell iu Vacuum. tumbler with rubber
Physics
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