104 ANTHROPOLOGY. 
the lungs; ”, entrance of the thoracic duct into the subclavian vein; ™, right 
lymphatic duct. : 
Pi. 188, fig. 18°, common carotid artery ; *, internal jugular;.*, external 
do.; *, axillary artery; °, axillary vein; °, a lymphatic vessel on the anterior 
of the breast; ”’, axillary plexus; ***, superficial lymphatics of the cranium; 
** superficial lymphatics of the face; *, anterior glands of the ear; *, sub- 
maxillary gland; “”, lymphatic vessels and glands of the neck. 
Pl. 136, jig. 15°, median vein; **, superficial lymphatics of the arm ; 
*, axillary glands. Jig. 16, deep lymphatics: »’ *, deep veins of the fore- 
arm; »**, lymphatics accompanying them ; *, lymphatic glands in the bend 
of the arm; ***, veins of the arm; **, their accompanying lymphatics; °, a 
gland of the arm; ’, axillary gland. 
- Pl. 188, fig. 12°, lymphatics of the lower part of the trachea; ?, heart 
with its superficial lymphatics; »*, superficial lymphatics of the lungs. 
Fig. 6, superficial lymphatics of the foot. Fig. 7, superficial lymphatics of 
the inferior extremity: ', lymphatics accompanying the great saphena vein; 
*, superficial inguinal glands; *, superficial lymphatics of the lower part of 
the abdomen and loins. /%g. 8, superficial posterior lymphatics of the lower 
part of the leg. J/g. 10, deep lymphatics of the anterior part of the leg: 
‘anterior tibial vein; **, its accompanying lymphatics; °, anterior tibial 
glands; *, superficial lymphatics of the lower part of the thigh. Mg. 11 a 6, 
anterior deep lymphatics of the thigh and pelvis: *, femoral vein; *, deep 
femoral vein; *, external iliac vein; *, lumbar vein; °°, deep lymphatics 
of the thigh; ’, deep inguinal glands; °, femoral plexus; °, iliac plexus; 
*”°, lumbar plexus. 
_ Pl. 184, fig. 11, deep lymphatics of the posterior face of the thigh: 
, lymphatic glands of the ham; **, deep lymphatics of the thigh; *, iliac 
plexus; *, lymphatic vessels between the glutzi muscles. Fg. 12, deep 
lymphatics of the posterior part of the leg: *, posterior tibial vein; *, pero- 
neal vein; *, popliteal vein; **, lymphatics of the tibia; °, of the fibula; 
*.°° lymphatic vessels and glands of the ham. 
IV. THE NERVOUS SYSTEM. 
(NEUROLOGY.) 
1. GENERAL CONSIDERATIONS. 
The nervous system, like the vascular, is distributed throughout all parts 
of the body, all the vital operations being subjected to its influence. It 
consists of two systems differing essentially in many respects, yet closely 
connected in many places: one, the animal, constituting the principal 
medium of communication between the organism and the external world 
by means of sensation, motion, and perception; the other, the vegetative or 
sympathetic, devoted essentially to the functions of assimilation and nutri- 
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