Tyndall, John, 1820-1893 · New York : Appleton · leaf 235
2526 SOUND. … the bands of India-rubber are drawn. The easiest modeof obtaining sounds from reeds of this character is to roll round the end of a glasstube a strip of thin India-rubber,leaving about an inch of the•« substance projecting beyond theend of the tube. Taking twoopposite portions of the project-ing…
Sound
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