Natural philosophy. including statics, hydrostatics, pneumatics, dynamics, hydrodynamics, the general theory of undulations, the science of sound, the mechanical theory of music, etc. : designed for the use of normal and grammar schools, and the higher classes in common schools (1861)
Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 185
s into thepharynx, with which it communicates by means of avalvular opening that is generally closed. It gives exitto the mucus which forms in the middle ear, and also per-mits the entrance of air into the tympanic cavity, whenclosed by a cold it causes partial deafness. The ossicles of the tympa-… … AET. 440.J THE ORGANS OF HEARING. 183 the OS orbiculare or round bone o, (the smallest bone inthe body), and the stapes or stirrup, s. The handle h ofthe malleus is fastened to the membrana tympani, and thebase of the stapes to the membrane covering the fenestraoxalis. The bones are joined to one…
Physics
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