4% Phccama, or the Anatomy of a^or^efs. 
by words. As fixed in the Crmhim you may obffrve in 
its fiirface a winding t Sinus or furrow that leads to the f fab. 2 . 
il 'Tympanum that is placed a little within the bone. At f/f' 2 ’ 
the Proseffus Ma.milLa.ris it has three large Protuberances A ’ 
or Procejjus, and at ks oppofite extream inwards a hollow, 
which is better perceived when the bone is taken out, 
for then you may oblerve a large * Cavity that leads in- ‘Fig.^.c. 
to the Hollows of the Ear- bone, befides ffveral other fo- 
ramina s that afford paffages to the Nerves or Ibme Imall 
muffles; fo that the Ear here is not a continued and en- 
tire bone forming a Cavity within its fflf, but at its ins- 
ward part where joyned to th e Cranium ’tis perfefldy di- 
vided and ff ems to make two bones, being joyned toge- 
ther only at its anterior part, where is the Tympanum. 
Sawing it there afunder, one part of the bone fbmewhat 
reffmbled a fort of Concha Veneris , and at one place was 
very f thick and Iblid, the other was a thinner Lamina t Fig- 1 3. 
making the Cavity ; the other, part, of the bone was like - dL 
wiff very thick, having three large Protuberances, the 
middlemoft which was oppofite to th ^-Tympanum at its 
outfide, had a large II foramen , which afterwards divided II K - 
into others ; here we fuppoffd the Auditory Nerve en- 
tered. This bone by its winding fomewhat reffmbled 
a * Cochlea, and at its infide oppofite to the Tympanum* a a. 
there went ffveral fibres or Imall minute Muffles, which 
by their contraction and keeping this membrane tenle, 
might perform their Office and fupply their defeCt, Na- 
ture never being wanting of means for the attaining her 
end, though not alwayes making ufe of the lame. So 
poffibly it is that fince there is lb open a Cavity at its 
pofterior part, it has made the bones there lb thick, and 
denff, that, the found may be more intenle from the. grea- 
ter Collifion of the Air on lb Iblid a body. Where 
there were a delign of giving the. Comparative Anato- 
my of the Organ of this Senff in various Animals, this 
may well delerve a ftricter inquiry into. Dan. Major 
hath given two Figures of this bone, but. without its ex- 
_ "Sim 
