INDEX OF SUBJECTS. 



1309 



PAGE 



Plexus, hypogastric, . 337, 338, 342, 344, 



348, 349 

 ,, lumbo-sacral, . . . 633, 635 

 ,, mesenteric, . 331, 336, 338, 642 

 ,, oesophageal, . . . .320 

 ,, pelvic, 636, 646, 647, 651, 667, 668 

 ,, post-fixed, .... 795 



,, pre- fixed, .... 795 



,, pulmonary, .... 320 



,, renal, 642 



,, solar, . . . 331, 334, 342 

 ,, spermatic, . . . .338 

 tympanic, . . 1157, 1240 



Plexuses of limbs, significance of, 



820 



Polarisation of electrical organ, 



Plume-organs, .... 924, 1008 

 Pneumatograph, ..... 282 

 Pneumograph, ..... 282 

 Points, cardinal, of eye, . . . 1209 

 ,, corresponding, of retina, 757, 1124, 



1127, 1138 



,, nodal, of eye, .... 1029 



,, principal, of eye, . . . 1029 



Poiseuille, law of, .... 64 



Polar excitation of sensory organs, 516, 517 



. 584 



muscle. See Muscle. 



, , nerve. See Nerve. 



,, nerve-cells, dynamical, . 798 



Polarising currents, heterodromous, . 585 



,, homodromous, . 585 



Polyneural cells, ..... 593 



Pons, 891 



,, afferent root fibres of, . . . 891 

 ,, ,, ,, to auditory organ, 



891 

 ,, ,, ,, ,, mucous mem- 



branes of head, 

 891 

 ,, ,, ,, ,, muscle sense 



organs, . 891 

 ,, ,, ,, ,, skin of head, 891 



,, ,, ,, ,, spatial sense 



organs, . 891 

 ,, centres in, ,, . . 891, 893 



,, conduction paths in, ascending, 893 

 ,, ,, ,, ,, from auditory 



end-nuclei, 893 

 „ ,, ,, ,, to corpus 



striatum, 893 

 ,, ,, , , ,, from dorsal 



column 

 nuclei, 893 

 ,. ,, ,, ,, spino-cerebel- 



lar, . 893 



,, ,, ,, ,, spino-mesen- 



cephalic, 893 

 ,, ,, ,, descending, 893 



,, ,, ,, ,, from corpora 



quadrige- 

 mina, . 893 

 ,, ,, ,, ,, from fronto- 



pontine, 779, 

 893 

 ,, ,, ,, ,, in posterior 



longitudinal 

 bundles, 893 

 ,, ,, ,, ,, pyramidal, 777, 



778, 893 

 ,, ,, ,, ,, from red 



nucleus, 893 



PAGE 



Pons, conduction paths in, descending, from 



reticular 

 formation, 893 

 ;, ,, r , ,, temporo-pon- 



tine, . 893 

 ,, degeneration in, after ablation of 



cortex, 705 



,, efferent root-fibres of, . . . 891 

 ,, ,, ,, for eye move- 



ments, . 891 

 ,, ,, ,, ,, facial expres- 



sion, . 891 

 ,, ,, ., ,, movements 



of mouth, 891 

 ,, muscles of 



mastication, 891 



. 891 



891, 893, 907 



. 891, 892 



. 893 



. 839 



. 45 



140, 161, 643 



. 228 



. 231, 260 



231, 258, 260 



. 623 



795 



,, functions of, 

 ,, nuclei of, . 

 ,, reflexes of, . 

 ,, transection of, 

 Porencephaly, 

 Portal vein, ligation of, 



,, vasomotors of, 



Position of body, 



, , erect 



, , normal, 



Post-cellular fibres, 

 ,, -fixed plexuses, .... 

 ,, -ganglionic fibres. See Sympathetic 

 nerve fibres. 

 Posture, perception of, . . 1013, 1014 



reflexes, .... 827, 844 

 Potassium salts, effect of, on muscle, 193, 225, 



226 

 ,, ,, ,, nerve, 465, 489, 



490, 536 

 Pre-cellular fibres, .... 623 



Pre-commissural area, .... 764 

 Pre-dicrotic wave, .... Ill 



Pre-fixed plexuses, .... 795 

 Pre-frontal region of cortex, 738, 770, 772,773, 



777, 779, 780 

 Pre-ganglionic fibres. See Sympathetic 

 nerve fibres. 



Pregnancy, 349. 350 



Pressure, abdominal, influence of, on 



circulation, . 44, 52, 91, 92, 

 93, 127, 129, 141, 147 

 ,, arterial. See Arterial pres- 



sure. 

 ,, capillary. See Capillaries. 



,, of circulation, mean hydro- 



kinetic, 70, 71 

 >, hydro- 

 static, 70, 71 

 ,, intracardiac, . . 14, 40 



,, ,, auricular, 22, 51, 150 



curve of, 22 

 ,, ,, ,, influence 



of valves 

 on, . 9 

 ,. ,, ,, maximal. 24 



negative, 

 23, 119 

 ,, ,, diastolic, 41, 50", 51, 



52, 72, 

 75, 77 

 ,, ,, influence of, on 



heart-beat, 56, 

 58, 170 



