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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 184

An illustration from 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, leaf 184
r andlower vocal cords are almost equally developed, and hencethe variety and range of its voice. The horse and ass hare AETS.437.438.] THE ORGANS OP HEARING. 181 only two vocal cords. The sounds produced by insects arecaused by percussion or by rubbing the horny sheaths oftheir wings or legs… … VJEETICiJi SECTION OF THE OEGJLN OF HEAEING. 437. The organ of hearing in man is composed ofthree parts, viz.:— I. The External Ear or Pinna. II. The Middle Ear or Tympanum. III. The Internal Ear or Labyrinth :— 438. The External Ear consists of two parts. I. The Pinna or Pavilion, (abc) also…

Physics

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