FIG. III. Reprefents, from a fimilar preparation, the parts in nearly the
fame view as in Fig. 11. and they are diftinguiflied by the fame letters.
T A B L E
' f S p
Jl-ll
f i l i
E X P L A N A T I O N OF THE TABLES. '59
G, The portio dura of the feventh pair.
H The bone which contains the fore end of the fuperior femicircular canaL
I The outer and pofterior part or branch of the portio mollis, running to
K the cochlea, from the membrane of the two laft turns of which the
bone is feparated.
L A fedlion of the internal carotid artery.
M The inner end of the os petrofum cut.
i i l i i
P'"f:!
ill' !
iJ
I
M; f
FIG. IV. and V. Shew the portio dura and moIKs, with the membrane
of the cochlea, feparated from the bones which covered them.
Fig. IV.
G The portio dura turned to the outer fide, fo as to tliew fully.
I KL The half iheath of the portio mollis, in which the portio dura was
lodged.
I The inner fide, or branch of the portio moUis, ending in M, the membrane
of the cochlea, the turns and apex of which are feen diftinfUy.
K The outer fide, or branch of the portio mollis, which terminates in N
the veftible.
L A thin middle portion, by which thefe two fides or branches are joined
together.
O A fmall thread that feems to be nervous, and which joins the portio
dura to the outer fide of the portio mollis.
In Fig. V. The fame parts are reprefented as in Fig. IV. and diftinguiflied
by the fame letters; but with this difference, that the trunk of
the portio mollis is turned forwards, fo as to ihew the under part of IKL.
'lip
yMi