INDEX. 



747 



The Numbers refer to the Paragraphs. 



Oleine, composition and properties of, 185 a 



Olfactory lobes, in Fishes, 357 359; in Rep- 

 tiles, 360; in Birds, 361; in Mammalia, 

 362; in Man, 422 



Olfactive nerves, functions of, 331 



Olivary bodies, 350354 



Omphalo-Meseraic vessels, 939 



Optic lobes, in Fishes, 357 359 ; in Reptiles, 

 360; in Birds, 361 ; in Mammalia, 362; in 

 Human embryo, 358, 359, 361 ; in Man, 

 422 ; functions of, 436 



Optic Nerve, 442 445 ; an excitor of motion, 

 443; decussation of, 445; termination of, in 

 retina, 539 



Optic Thalami, 423, 424 



Orang Outan compared with Man, 50 60 



Orbicularis muscle, reflex action of, 394 



Orbit, motor nerves of, 405; muscles of, 450, 

 451 



Organic fibres of Nervous System, 244, 247, 

 341 



Organization, connection of, with vital proper- 

 ties, 781 ; incipient in liquor sanguinis, 117 

 119 ; in coagulable lymph, 1 17, 795 



Organs of Sense, their mode of operation, see 

 Ear, Eye, &c. 



Ornithorrhyncus, 44; mammary gland of, 821 



Ossification, in membrane, 197, 201 ; in carti- 

 lage, 198201 



Ostrich, incubation of, 41 



Otter-breed, origination of, 70 



Ovarium, origin of ova in, 905 907 ; corpus 

 luteum in, 913, 914 



Ovisac, 907, 908 



Ovum, component parts of, 905; origin of, 906, 

 907; maturation of, 909; arrival of sperma- 

 tozoa at, 900, 911 ; discharge of, from ovary, 

 912; first changes in, 915918; later 

 changes in, 934 947 



Owen, Mr., on blood-corpuscles of Siren, 145 

 note; on structure of dentine, 210 ; on forma- 

 tion of dentine, 213, 214 ; on formation of 

 enamel, 215 ; on formation of crusta petrosa, 

 216 



Oxygen, introduction of, in respiration, 766; 

 presence of, in arterial blood, 770, 771 ; in- 

 fluence of, on colour of blood, 771, 772 ; 

 effect of respiration of, 777 



P. 



PAGET, Mr. J., on areas of arteries, 710 6 ; on 

 concentric hypertrophy of heart, 597 ; on 

 absence of corpus callosum, 474 o; on ac- 

 tion of heart, 717 



Pancreas, structure of, 862 ; secretion of, 669, 

 670, 863 



Papillae, of skin, 522 ; of tongue, 527 



Papuans, 104 



Paralysis agitans, 381 note 



Paraplegia, cases of, showing reflex action, 

 366369 



Parturition, 393, 928, 929 



Par Vagum, 408; the excitor of respiratory 

 movements, 374, 375; influence of, on pha- 

 rynx, 385 ; on cBSOphagus, 386 ; on stomach, 

 387 ; chief excitor of sense of hunger, 412, 



637; effects of section of. on lungs, 409 

 411 ; on digestion, 412 415; on heart, 416 



Pelagian-Negro races, 104 



Pelvis, various forms of in different races of 

 Men, 88 



Pepsin, 668, 669 



Perception, 488490 



Perenni-branchiate Batrachia, 32 



Peristaltic movements of intestines, 388, 575, 

 660; independent of nervous agency, 388; 

 influenced by spinal cord through sympa- 

 thetic, 388, 389 



Peyerian glands, 874, 876 



Philip, Dr. Wilson, his experiments on the Par 

 Vagum, 414, 415; on connection of Nervous 

 System with heart, 717 a; with Capillaries, 

 742 ; on animal heat, 890 



Phosphorus, an element of food, 648 ; in pro- 

 teine-compounds, 113, 114; oxidation of, in 

 system, 847 



Photophobia, 431 



Phrenological doctrines regarding Cerebellum, 

 466470 



Phrenology, observations on, Appendix I. 



Physiology, objects of the science, and mode 

 of pursuing it, Introduction, 



Pigment-cells, 163, 164 



Piementum nigrum, 164 



Placenta, 44 ; formation and structure of, 920 

 924 



Placental souffle, 925 



Plants, see Vegetables 



Playfair, Dr., his observations on Milk, 855 



Plethora, increase of blood-corpuscles in, 

 708 c 



Plexus of nerves, use of, 298 



Plica Polonica, 168 



Plicae dorsales, 937 



Pneumogastric nerve, see Par Vagum 



Poisseuille, M., his experiments on the circu- 

 lation, 726, 729, 730 



Polli, Dr., his observations on blood, 701, 702 



Polydesmus, nervous system of, 326 



Polynesian races, 103 



Polypes, 6 10 ; circulation in, 715 ; reproduc- 

 tion of parts in, 9, 792; movements of, 313 



Porrigo favosa, 809 a 



Portal circulation, 685, 746; in liver, 826, 

 827 ; in kidneys, 839 b 841 



Portio dura, 406 



Posterior roots of spinal nerves, 344 



Pregnancy, signs of, 926 ; see Gestation 



Presbyopia, 538 



Prichard, Dr., his ethnographical researches 

 referred to, 63 note, 77, 92 



Primitive trace, 936 



Protecting agency of Spinal Cord, 394 396 



Proteine, composition and properties of, 116 



Proteus, 32; blood-corpuscles of, 146 c, 151 



Prout, Dr., his classification of alimentary sub- 

 stances, 640 ; his observations on secondary 

 digestion, 681 ; on amount of carbonic acid 

 excreted, 767 ; on watery exhalation from 

 the lungs, 773; on urine, 845 d; on general 

 disorders of secretion, 883 



Puberty, in Male, 903; in Female, 90S 



Pulsation of heart, 717 



of arteries, 729 



Pulse, average frequency of, at different ages, 



