( 26 1 ) 
ty 5 mobelong to tht Malleus, the Third to the Stapes 
laftly, the branch of the iVie/'z^^ which paffes behind the 
Draw has been taken by fbine for the Tendon of the Mujcle 
of the Malleus , is a branch of the Fifth pair. 
T^htTyfoWindowso^tn into a cavity which is hewn in 
the OS Petrofum and called the Labyrinth, divided like wife 
into three parts vi^. the Entery of iht Labirinth ^ the three 
Semi circular Canals » and the Snail Jhel 
The entry of the Labyrinth is fituated behind the Oval 
Window dixA hath Nine apertures, t'i:^. the oW one and 
Eight more> the Firft of which leads into the upper part 
of the Snail-Jhel ^ Five belong to i\\t Semi- circular Canals , 
and the two laft tranfmit two branches of the fofter por- 
tion of the Auditory Nerve &c. 
The implanted air he takes to be that contained v^ithin 
the above mentioned Windows , which bein^ both clofed, 
the one by the bafe of the 6*^^^/ , the other by a ir^embrane 
of its own , dofufficiently forbid any intercourfe between 
that and the external air , and difcourfing of the Nerve 
which pafles along the Mujculus Mafioides a nd the Parotids 
to the Ear, he deduces itfrom thelccond pair of the Vertex- 
bral Nerves which/he (dysj^v Willis brings frofn tht xht fir^^. 
The differences of this Organ mih^Fmn^s are that the 
bony part of the entrance to the Ear is nothing but an 
hard Membrane ^ that there is a ring which ferves for 
a frame to the Tympanum feparable from xht OsTempo» 
rum» tho afterwards united to ir. and that while the 
Feetusis yet in the wcmb^ xheTynipanum is covered with 
a iimcilagencus matter, which afterward hardens into a 
Me?nbrane> though at length it totally difappears &c. 
The Small-bones ixh^ Labyrinth ^tht CanaU^iht SnaiLftoel^ 
and otherinternal parts have the fame Figure, and to ap- 
pearance the lame bulk in Infants wcH they have in Men, 
and all that years contribute to chem is Strength and Soli- 
dity. Havemg <:^iven an exa£l defciipc^on of the parts 
Qi\\i^Ear> he toliows it Nvith the ufe of thofe parts. 
Mm The 
