Tyndall, John, 1820-1893 · New York : Appleton · leaf 176
elements of which I hadbegun to learn rather late, that is, in my nineteenth year.I noticed that the science of acoustics was more neglectedthan most other portions of physics. This excited in methe desire to make good the defect, and by new discoveryto render some service to this part of science.… … fi^Sdiani ■ Cyfi/^i^n^- » Ww Im-Ii n \pp1r-lon&Co NODAL LINES RENDERED VISIBLE. 169 modes of vibration. At this time there appeared in thejournals some notices of an instrument made in Italy bythe Abbe Mazzochi, consisting of bells, to which one ortwo violin-bows were applied. This suggested to…
Sound
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