Note 13 — Chapter I · SOMATIC CHARACTERS.
Reading edition
The enormous development of the laryngeal sacs in the orang-utan is perhaps also in harmony with this protective function, as I have shown in a special work. See Deniker and Boulart, “Notes anat. sur ... orang-utans,” Nouv. Arch. Mus. d’hist. nat. de Paris, 3rd Series, vol. vii., p. 47, 1895.