Chapter XIX

; defined, 302; differs in individuals, 302; Galton's statistics of, 302; visual, 302; auditory, 306; motor, 307; tactile, 308; pathological differences, 308; cerebral process of, 310; not locally distinct from that of sensation, 310

Imitation, 406

Inattention, 218, 236

Increase of stimulus, 20; serial, 24

Infundibulum, 82, 84, 88

Inhibition, defective, causes an Explosive Will, 437

Inhibition of instincts by habits, 399

Insane delusions, 207

Instinct,