160 PROCEEDINGS OF THE ACADEMY OF . [1880. 



ON THE STRUCTURE OF THE ORA.NG OUTANG. 

 BY HENRY C. CHAPMAN, M. D. 



Tarious parts of the Orang, Siniia satyi'iis, L., have Ibeen dis- 

 sected, described, and figured bj Tiedemann,^ Owen,^ Saiidilbrt,^ 

 Cuvier,^ Schroeder yan der Kolk and Yrolik,^ Rolleston,^ Selb^','^ 

 Huxley,^ Bischoff,^ Barnard,^'' Langer," Gratiolet,!^ Spitzka,^^ and 

 others. It was hardly to be expected, the subject having been 

 investigated by such eminent observers, that I could hope to find 

 ■anj'thing particularly new to science. It occurred to me, how- 

 ever, that it might not be altogether useless to bring to the notice 

 of the Academy a general resume of the results of jny dissection 

 of the Orang that died at the Philadelphia Zoological Garden in 

 Februarj" last, more especially as the memoirs referred to below 

 are scattered through the journals, and are often limited to descrip- 

 tions of certain parts of the animal only, such as the brain, mus- 

 cular svstem, etc. 



My Orang was a j'oung male, supposed to be about three years 

 old. The following measurements were taken : From vertex to 

 rump, 16 inches ; upper extremity, 20|^ inches ; arm, "7 inches ; fore- 

 arm, 8 inches; hand, 5j inches; lower extremity, 17^ inches; 

 thigh, 5 inches ; leg, 6 inches ; foot, 6^ inches. What struck me at 

 once was the length of the upper extremitj-, it being 3 inches longer 



1 Tiedemann, Zeit. Phys. Darmstadt, 1837. 



2 Oweu, Proc. Zool. Soc, i, 1830, 1831. 



■^ Saudifort, Ontleerlavindige Beschryving, Leideu, 1840. 

 ^ Cuvier and Laurillard, Planches, 1849. 



° Schroeder van der Kolk and Vrolik, Verhandelingen Kou. Nied. Inst. , 

 1849; Verslagen Kon. Acad., 1862. 

 fi Rolleston, Nat. Hist. Rev., 1861. 

 ^ Selby, Nat. Hist. Rev., 1861. 

 ^ Huxley, Med. Times, 1864. 

 « Bischoff, Munich Abhand. 1870. 

 ^^ Barnard, Proc. American Assoc, 1876. 

 '' Langer, Sitzungsberichte, "Wien, 1879. 

 ^'^ Gratiolet, Plis Cerebraux des Primates, no date. 

 " Spitzka, Journal of Mental and Nervous Diseases, 1879. 



Note. — I regret that when dissecting the Gorilla I was unacquainted 

 with Mr. Macalister's valuable paper in the Proceedings of Royal Irish 

 Academy for 1873^. 



