Speech of the Orang Outang. 149, 
fecondly, of the larynx from the in fide of the pharynxy 
and, laftly, of the infide of the larynx itfelf. 
Fig. 2, n, o, p, reprefents the os bye ides ; n, o, the bails ; 
p the left cornu', n, o, the little graniform bones. 
q_, t, u, the thyroid cartilage; v the afpera arteria. 
z, x the right ventricle cut open ; r, s the left, 
y the hole leading into the bag.. The ventricles 
form here a kind meatus , paffing over the brim of the 
thyroid cartilage, under the os hyoides , towards the infide, 
where they form the fiffures a, b, and a, /, fig. 5 . I dif- 
fered this in the Anatomical Theatre of the Univerfity 
at Groningen in public.. 
In a fecond, which Mr. vosmaer, the keeper of the 
Prince of Orange’s cabinet,, was fo kind as to grant me 
for diffedt ion, I found both thefe ventricles the fame in 
every refper as the others, except that thefe laft were of 
equal fize. 
In the third, which I differed at the houfe of Dr. 
van hoey at the Hague, the 31ft of Auguft, 1777, 
the two ventricles were fmaller but of equal fize on 
both fides. The animal was very young. The doror 
prefer ves this preparation in his mufeum. 
In a fourth, which I preferve intire in my collerion,. 
but whofe organ of voice I examined the 30th of No- 
vember 
