ORANG-OUTANG. 
371 
£5 However, in the Orang presented to me by M. Hope there was some 
difference : the tongue-bone was the same as in the two former, but there was 
merely one single sack, having two air tubes, which united themselves with 
the two splits. 
“ In opening further the skin of the breast, and separating the broad muscles 
of the neck, I saw one single sack, and inflated it through the throat of the 
Orang, upon which it appeared, that it was indeed derived from two mem- 
braneous tubes, as in the three former ones, but that the two sacks were 
gone over into one : had this been produced by touching or pressing, or had 
they been so from its birth ? 
“ It was also plainly seen, that the part of the right side, being larger than 
the left one, left behind a sort of partition, by the narrowing betwixt. If 
air was introduced through the one or other opening at the side of the epi- 
glottis, the whole sack expanded equally ; and if strongly blown into it, 
the appendages became more considerably visible. 
“ As soon as the trunk of the Orang-Outang was sent me from the Hague 
by M. Vosmaer, I examined the speaking organs, removed the flaps of the 
two latissimi colli, or broad muscles of the neck, very carefully, and pre- 
pared every thing as well as I could, blowing from time to time through 
the larynx, by which I perceived, that in this Orang both the sacks had 
also gone over into one, but they were much larger than in the one just de- 
scribed from M. Hope j the bottom ran nearly to the end of the breast bone, 
and was partly covered by the breast muscles ; the sack ran upwards above 
the clavicular bones, and with the appendages still more backwards, so that 
this sack penetrated on each side deep under the monk’s-hood muscles, as 
far as behind upon the shoulder-blades. 
“ As the Orang gets older and taller, so extends this sack, probably by 
degrees more and more, the same as we see in herbiverous animals, that, 
when just brought forth, their fourth maw is larger than the paunch ; and 
on the contrary, that this latter, by means of the continual further expan- 
sion in the eating of food, becomes again considerably larger than the 
former : the air performs here the same, and the sack having expanded 
more and more betwixt the just-now enumerated parts, obtains gradually 
these manifold extensions, under the shape of appendages. 
“ When I brought the blow-pipe into the larynx, and shut the split, I blew 
the lungs up first, and these being filled, the air immediately penetrated 
into this large air-sack. It does not appear to me that the passing over into 
3 b 2 
