aupoft^raiiiparent, and riot pierced witE|i(^es, ^ a car- 
tiin Modern defcribes it* /'V J ' 
The Sides or Branches of thc^ Stapes are furrowed on the 
infide^ tlie fpace between being fometimes fhat vvith a 
M<^nibrane, andofte,o but half {hut -^ but-forthe moft pare 
Kerobferves no Membrane at all betweeii thcim The Stapes 
ftands on the Fora/p^ef^- Ovak in a middle/pofition, between 
Vertical and Horizontal ^ it fliuts this hole cxadiy, being 
faftened to its Margin by a thin Membrane, but yet fo 
lopfely, that it has the freedom of moving.up and down a. 
which motion he thinks Gontributes niuch^io Hearings, 
fi)r upon opening the Ear of one that had beca very long, 
(leaf; he obferved, that the Offification of this very Mem- 
brane was the only cau(e of his deafneft/ The fltfiiy 
Belly • of the M'pf cuius Stapes^ firft difcovered in a tbrlb , 
hj C^Jfcrhis ?lacentinHs, is contained in a B3ny CKa{|neL 
excavated about the middle of the^fii/e 
d^iS: ' laterally, from which its Tendoa is-xftliquelf carried 
the head of the Stirrop» 
Tho' thofe fonr little Bones have no P^H/^//^;^, yrpt fc-.^ 
ye r^I Blood VelTels run upon them/ and;et|/u^^ 
fence, which is very compaft and haM 3! the'S^^^^indeecfe^ 
is fomething brittle,' not becauTe its mbfe por pii^,. ijia^ (die 
reil:, but bccaufe it confifts only but of one Bbny £.^;/fe//^,^.^^ 
' The Fer;cflra rotunda he fometimes obferves' to be of aa 
"OVal Fignre : :The' Membrane that (li{g|s.,i|y|:|^^^ 
down than its Margin, , . ^--.z -Hi'iic'r Vnl %r a-' . 
^Ife (J^fcribes fe vera! fmall holes th^t |)j£t,ce^^ 
aSil op^tj'into the T/^j)^?;^///w jnft above' tli^ articufation of - 
the Malleus and locus', by thefe , extra vafappd Blood pr 
j^fulen^ Matter, contained v/i-thih tha,^k,i^il,,rDia^^^ 
riKif ihCp th?, Ckvity pf'tfte Baird , . f^ 
^ft?er"<ipkfs thro' the [Hiatus m the Mc/^^^Jj^mpm^ 
5P3£by-the T«^^ hujlachik, and fq 'be' evaVgaWd^-^^ 
Mouth. He proves th^ exiftence of fuch fiolies by injcfti^ 
mi^ .and two praftxcal obftrvations. 
