( 26o) 
from the Carotid's one branch of which paffeth behind, and 
the other before , and the diftribution of thcfe is attended 
by l^eifis from the external ]ugular. 
The hole of the £"^risa lube reaching komtht Concha 
to the Drum and confifts partly oi ^ Cartilage ^ and partly 
of a Bonex\\Q Skin that covers it is furniflied with an infinite 
number of Glandules of a Yellowifli colour , each of which 
hath its Tube opening into the cavity of the Ear^dnid fend- 
ing forth that yellow glewy fubftance which is ordinarily 
found there : at the end of this paffage is feated the Mem-- 
^mw^ called the 2)rz^;w and is almoft round, dry, ihin, and 
tranfparent V and is inchafed in a channel cut in the bone 
at the tnd of that Tub^. After this Membrane fucceeds a 
cavity which he calls the Barrel^ from the likenefs it hath 
to the Barrel of a Drum^ht'mg on the fides encompaffed by 
. the BoUi , doled before by that Membrane, and behind by 
the furface of theOj* Petrojum, This Barrel oixht Drum 
contains in it five forts of things rernarkablejt/i;^- Two 
Channels^ Two jifertures^V o^r Bo?ies^ Three Mufcles^ and 
One Brafich of the Nerve, The Channel that goes from 
the Ear to the Palate he calls the JqueduU , and deniesit 
to have any Valves to hinder the paflage of any thing from 
the Ear, 
1 he Apertures , or Windows are fcltuated in the Superfi-- 
ciesoi ihQ Os Petrofum oppofice to Ac Drum; the higheft 
Oval Window An the bottom of which is a fmall edg 
on which the 5^// of the Incus vtlisy the other which is 
called the I{ound Window^ has a fmall Channel in which is 
fet a very fine, dry, and diaphanous Membrane like that of 
the P^rum, 
The fivft of the bones is ihe Malleus y the lengih of 
which is commonly ab^vut Four lines ^ or Four of Twelve 
parts ofan lnch/(ht Diameter of its breadth is the Third of 
its length ; rhe Sccon.I ihe hicus , th hmgeft of vv hofe 
legs is joy ned to thQ Stapes by the mediation of the Fcurth 
bone. u- i ■ ' i ' 
Of the Three MuTcles'^^^r^^ in this Cavi- 
ty 
