614 ANIMAL PHYSIOLOGY. 
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Fia. 456.—Diagram intended to illustrate relative position of various parts of ear (after Hux- 
ley) E.M, external auditory meatus ; Ty. M, tympanic membrane ; Ty, tympanum ; Mull, 
malleus ; Inc, incus ; Stp, stapes ; F.o, fenestra ovalis ; F.r, fenestra rotunda ; Hu, Eustachi- 
an tube; M.Z,membranous labyrinth, only one of the semicircular canals and its ampullabe- 
ing represented ; Sca.V, Sca. T, Sca. M, scalee of cochlea, represented as straight (uncoiled), 
Fia. 457.—Photographic diagram of labyrinth (after Flint and Ridinger). Upper figure: 1, 
utricle ; 2, encoule 3,3, 5, Snemibranous cochlea ; 4, canalis reuniens ; 6. semicircular cannle. 
Lower figure: 1, utricle ; 2, saccule ; 3, 4,6, ampulle ; 5, 7, 8 9, semicircular canals ; 10, 
auditory nerve (partly diagrammatic) ; 11, 12, 13, 14, 15, distribution of branches of nerve 
to vestibule and semicircular canals. 
