INDEX AND GLOSSARY 



333 



HITZIG, E., 281, 299, 300 



HODGE, C. F., 105 

 .HOFER, B., 199, 203 



HOLMES, G., 166, 171, 254, 262, 280, 

 300, 311 



HOLMES, S. J., 262 



Horn (cornu), one of the three chief 

 parts of the lateral ventricle 

 anterior, posterior, and inferior or 

 middle; also applied to the gray 

 Columns of the spinal cord. 



HOUGH, TH., 68 



HLBER, G. C., 87, 95, 233 



Humor, vitreous, 205 



Hunger, apparatus of, 89, 240 



Hyodon tergissus, brain of, 302, 303 



Hypophysis (pituitary body, pitui- 

 tary gland), a glandular appendage 

 to the ventral part of the hypo- 

 thalamus; its posterior lobe is an 

 outgrowth from the Neural tube, 

 its anterior lobe is an ingrowth 

 from the epithelium of the em- 

 bryonic mouth cavity, 114, 119, 

 163, 167 



Hypothalamus, the ventral subdivi- 

 sion of the Diencephalon, contain- 

 in": the Hypophysis and the mam- 

 millary Body, an important olfac- 

 tory correlation center, 117, 118, 

 121, 122, 162, 163, 165, 166, 167, 

 174, 176, 215, 220, 221, 222, 246, 

 260 



Idiocy, 279, 290 



Imbecility. See Idiocy. 



Impulse, nervous, nature of, 96, 97 

 velocity of, 97, 98. 



Infundibulum, a funnel-shaped ex- 

 tension of the third ventricle pass- 

 ing through the Hypothalamus to 

 the end in the Hypophysis, 114, 

 119, 120, K.:i 



Inhibition, the diminution or anv-t 

 of a function, 63, 66, 108, 25 J, 

 256, 279, 307 



Insanity, 2','0 



Insects, nervous system of, 29, 30 

 respiration of, 2: id 



Instinct, a complex form of in- 

 variable Behavior, 32, 61, 257, 

 263, 290, 301, 307, 309, 311, 312, 

 313 



Insula (island of REIL), a portion of 

 the cerebral cortex which is sub- 

 merged under the Fossa lateralis, 

 166, 170, 266, 273 



Integration, the combination of dif- 

 ferent acts so that they cooperate 

 toward a common end, 106 



Intelligence. See Consciousiu 

 lapsed, 32, 301, 309 



Interbrain. See Diencephalon. 



Interference of nervous impulses, 58, 

 61, 63, 307 



Interoceptor, a sense organ excited by 

 stimuli arising within the viscera; 

 cf. Visceral apparatus and Visceral 

 organs, 74, 77, 89, 243 



Intestines, nerves of, 144, 234, 241, 

 242 



Intoxication, effects of, 97, 101, 102, 

 103, 104, 231, 258 



Introspection, 98, 297, 309 



Intumescentia cervicalis (cervical 

 enlargement), the enlargement 

 of the spinal cord from which 

 the nerves of the arm arise. 

 lumbalis (lumbar enlargement), 

 the enlargement of the spinal 

 cord from which thr nerves of 

 the leg arise. 



Invariable behavior. See Behavior, 

 invariable. 



Invertebrates, behavior of, 32 

 nervous system of, 



Iris, 14:5. 211, I'::--'. 234, 217 



Irradiation of n< rvous impulses, 65, 

 66, 100, 260, 20s 



Island of KKII.. See Insula. 



Isthmus, a narrow segment of the 

 brain forming the upper end of the 

 Rhombencephalon (H. X. A.); it 

 might better be regarded as 

 merely the plane of separation be- 

 tween Rhombencephalon and 

 Cerebrum, 116-119, 121, 122, 143, 

 160 



Iter (itor a tertio ad quart um ven- 

 triculum). See Aqueduct of Syl- 



JACKSON. Hr<;in.i\<.-. 2'.i2 



JAC OHSO.X, nerve of. See Nerve, 



tympanic. 

 JAMES, \\ .. 2.v.. 262 



