Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 570
Fig. 363. … Fig. 369. Fig. 370. the instruments which employ them are capable of yieldinga great number of notes. An example of a mouthpiece formed by membranoustongues is shown in Fig. 370. It is made by cutting off agutta-percha tube obliquely on both sides, and stretching twostrips of india-rubber over the…
Physics
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
