( 8pi ) 
Lines to another Angle, ('5.) where the Manuhrium 
Malleoli begins, and where it becomes more round ; 
from whence it gradually Tapers to the Point, being 
fix Lines in length. 
The head of the Incus is four Lines broad, {Fig. Vi 
( i. ) below which is the Neck or an oblique Sinus; (i) 
next to that are two /ipophyfes^, one on each fide. Thefe 
defcending obliquely outwards, and becoming flat, 
meet in a Point, (Fig.VU. (5.) whence afcending ob- 
liquely inward, this Produdion is join’d to another 
fmall round one, like the Manubrium Malleoli 41 Lines 
long ( 6. ) This has the fore- mentioned fmall excava- 
tion or half round Sinus-i ( 7. ) which with the extremity 
of the Stapes, I fuppofe to have contain’d the Os qua^ 
dr angular Cy or rather Orbicular e, according to the Figure 
of the Sinus. 
The Stapes differs much in Figure from the Ffuman 
one. from its Concave extremity ’tis enlarg’d on each 
fide by two fmall (lender Productions, not unlike the . 
ProcefTes of the Vertebrae of fome Filbes ( Fig* VI. (x z) 
to which is join’d the Bajts, ( }.) Co thin almoft as the 
Scale of a Fifh. This was accidentally feparated from 
its two Sides, and remain’d in the Foramen Ovale, from 
whence I pull’d it, with a Pin ; ’Tis Concave towards the 
Stapes, and Convex toward the Vefiihulum. 
The Foramen Ovale lyes fo hid and obliquely in the 
fide of the Cavitas Tympani, that it could not be deli- 
‘neated in its true Dimenfions. Near to it is another 
hole Oblong and Sharp at both ends, both which give 
an entry into the Veftibulum, 
The Vefiihulum is of an irregular Figure, {Fig. X.(a) 
’tis for the mod part three Lines from the one fide 
to the other, and perforated by eight Orifices, viz. 
five for the Canals of the Labyrinth, {Fig IX. X- (”4 ) 
one 
