i
Î I 2 EX P L A N A T I O N OF THE.TABLES.
F I G. 9.
Shows the cochlea further cut open.
W, A tube which fills one of the fcal^ of the cochlea.
Y , Part of the feptum between the fcalae of the cochlea.
Z, The fécond turn of the cochlea cut perpendicularly in two places.
T A B L E XXXVL
THE feveral figures of this Table reprefent the organ of hearing of the Sea
Tortoife or Turtle.
F I G . I.
IN this Figure the roof of the mouth is delineated, with the mouths of the
Euftachian tubes of the ears.
A B C , The teeth of the upper jaw.
D E , The condyles with which the lower jaw is articulated.
- F G, The holes by which the cavities of the nofe communicate with the
mouth.
H I, Probes put into the Euilachian tubes of the ears.
K, Part of the right Euilachian tube cut open.
In Figures 2. and 3. the upper part of the organ of hearing is reprefented.
F i g . 2.
A, Reprefents the hollow outer part of the head, on the right fide, analogous
to our right temple.
B, A large cavity within this place laid open by a horizontal fedion.
C, The termination of the Euilachian tube in that cavity, fliown by a probe
introduced into it.
D, A white tendinous-looking fubftance, which conneds the hollow part of
the temple to the inner part of that cavity.
E, The outer end of a long cartilaginous body, which, like the oiTcocartilaginous
fubftance in birds, fcems to fupply the place of the malleus, incus,
OS orbiculare, and ftapes, in man ; or which conneds the hollow part of the
temple to the labyrinth of the ear.
TXB, XXXVI
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