41 Pli€CiC«a, or the Amcm) ofu ^vri^fi.^ 
' by words. As ' fiXed in tfie Chhmm you may obferve ift' 
its furface a winding \ Simisoximrowtlm leads to thefr^^. 2. 
\\7ymfamraxh'Ai\s^d,ct\\ -^ Jittle within the bone. At-j:'^' 
tht Proctijus MamiUaris it has three large Protaberances 
QiBrocefl'm, and^at its-oppofite extreani inwards a holloW,^ 
which is better perceived when the bone is taken out^ 
for then you may obferve a large ^ Cavity that leads in- "p/^.ijA 
to the Hollows of the Ear- bone, befides feveral other fi- 
Tiimtnch that afJbrd pafTages to tl:e Nerves or fome finall 
mufcles; fo that the Ear here is not a continued and en- 
tire bone forming a Cavity within its ftlf, but at its in-- 
Ward part where joyned to the Crawtm '^m perfeftly di*' 
vitfed and feenis to make two bones, being joyned toge-* 
ther only at its anterior part, where is the Typtpmum. 
Sawing it there afiinder, one part of the bone^mewlm 
refembleda fort of Comkx Veneris^ and at one place was 
very t thick and folid, the other was a thinner Latnim fvii. 13* 
matdngthe Cavity ; the other- part of the bone was like- 
wil^very thick, mving three large Protuberances, the 
middlemoftwhicli was oppofireto the Tympanum at its 
outfide, had a large lljf^r^y?^;?, which afterwards divided^lls<^ 
into others ;^ here we fuppoftd the Auditory Nerve en- - 
tered. This bone by its winding fomewhat refcmbled 
a ^Cochic4, and at its infide oppofite to the Tympmtim'^ 
tliere went feveral fibres or fmall minute Mufcles, which 
, by^ their contraction and keeping this membrane ten%^ 
might perform their Oifice and fapply their; defeft,- Na-' 
Uire never being wanting of means for the attainihg heir 
end, ihough not alwayes- making ufe of theftme.' Sq 
poiTibly itisthat fince there is fo open a Cavity" at ib- 
pofterior part, it has made the bones tliere fo tliick and 
denfe, that the found may be more intenfe from the grea^ 
ter Colliiion -of the Air on fb fblid a body. Wher^ 
there were a defign of giving the Comparative A-hato- 
my of the Organ of this Senle in various Animals, this 
may well delervea ftrider inquiry, into. Dm. Major 
hadigiventwoFiguresof this bone, byt without its- ex- 
planation.. 
