E X P L A N A T I O N OF THE T.
T A B L E VI .
T H I S Tabic reprefcnts chiefl7 the mucous ducts i
S k a t e .
1 , 1 , The nofe.
2 , 3 , The two jaws with the teeth.
4 , 5 , 6 , 7 , 8 , Five openings or fpiracula on the left 1
e a c h of the gills.
g , The centre f rom which innumerable mucous dudl
f r o m the centre of a circle.
10, I I , 12, Bundles of mucous ducts running outwar
t h e furface of the body.
1 3 , 1 4 , A large bundl e of the mu c o us d u d s running i
f u r f a c e o f the fkin o f the brcaft. At 14 many of thci
b r i f t l e s int roduc e d into them.
A B C C C C D E F G H I K L , Large and piAurefque c
c o n t a i n mucus, injected with wax; and which are fo di
n e e d l e f s t o be very particular in the dcfcription of the
C C C , are a few ihor t branches, which by open mouths
f u r f a c e of the fkin. From H a large branch is fent to
f n o u t . from K the mucous d u d makes a tur n t o the u
t h e fifli.
T A B L L Vir.
THIS Tabl e reprcfents the mucous d u d s on the b a c k pj
m e a t u s auditorii externi.
F I G . I. A B , Two round holes, which make the bej
i n t o the ear. Behind thefe the head is j o i n e d to the fpine
F I G . 2. Reprefents in a ikate the palTage through the FLS
t h e ear; the concha laid open, and the beginning of the
i n t e r n a l ear, all feen f r o m the under or anterior fide.
a a, Probes in two holes through the Ikin, leading int
e a r .
bb, The beginnings of the c o n c h a , of a funnel - l ike ilia
c c, T h e winding o f the conchsi
d , A probe paiTed f r o m the right concha into the begi
f r o m the concha to the internal ear.
X