1879-3 NATURAL SCIENCES OF PHILADELPHIA. 53 



to be about five years old, and measured 28^ inches from crown 

 of head to sole of the feet. The upper extremity of right side 

 measured from shoulder to end of middle finger 18 in.; the lower 

 extremity measured from the head of the femur to the end of the 

 middle toe of the right side 16 inches. The hand, taken from 

 the wrist to the end of the middle finger, measured, on the right 

 side, 5| in. The right foot, considered from homologous points, 

 was 5^ inches long. As in the young Gorilla, so in the young- 

 Chimpanzee, Plates IX. and X., the resemblance of the head to 

 that of a human being of an uncivilized race is more striking than 

 in the adult. The distinction between the hand and foot in the 

 Chimpanzee is not, however, so well marked as in the Gorilla 

 the foot, superficially considered, resembling a hand. As we shall 

 see, however, this is only a functional difference, the lower extrem- 

 ity in the Chimpanzee terminating structurally in a foot just in 

 the same sense that a man's does, all of the apes and monkeys 

 being anatomically bimanous and bipedous, and not quadruma- 

 nous. The hand in the Chimpanzee is larger than the foot. 



Cervical Region. On removing the skin I noticed a well- 

 developed platysma myoides, and so far as I could see this was 

 the only representative of the panniculus carnosus muscle of the 

 lower animals, with the exception, perhaps, of a few scattered 

 fibres in the fascia of the hand corresponding to the palmaris 

 brevis of Man. The external jugular vein was quite evident. Next 

 in order came the superficial cervical plexus of nerves and the 

 sterno-cleido mastoid muscle, which differed from that of Man in 

 being divided into sternal and cleidal portions, the cleidal portion 

 arising a little lower than the sternal, and the insertions being 

 equally distinct. The spinal accessory nerve separates the two 

 parts of this muscle, and differs in this respect from the disposi- 

 tion given by Yrolik, as well as in the fact that its internal root 

 joins the pneumogastric. From this latter nerve the superior and 

 inferior laryngeal nerves pass off to supply the larynx, the inferior 

 passing around the subclavian artery on the right side and the 

 aorta on the left, as in man. There was nothing particularly 

 noticeable in the distribution of the glosso-pharyngeal, lingual 

 branch of the 5th, or the hypoglossal nerves, this latter winding 

 around the external carotid artery, passing over the hyoglossus 

 muscle and under the mylohyoid to be lost in the tongue. The 

 digastric was well developed, as also the stylo-glossus, stylo- 



