1018 



INDEX. 



834. Conditions which modify quantity of, 

 absorbed in respiration, 842, 843, 844 

 Ozone, 823 



PACHYDERJIATA. Digestive organs, 584, 585. 

 Digestive glands, 595. Sight, 473, 474. Lo- 

 comotion, 178, 179. Cerebrum, 321, 322, 

 324 



Pacinian corpuscles, 358 



Pain, 347, 353 



Palate, 373, 500, 501. Cleft , 968. Hard 

 and soft. 500, 501 



Palpebrae or eyelids. 415 



Palpebral fissure, 417 



Palpitation of the heart, 352 



Palmitic acid, 75 



Palmitin, 75 



PANCREAS, 36, 62, 96. Description and struc- 

 ture of, 541. In animals, 595, 596. De- 

 velopment of, 972 



Pancreatic juice, 95, 541. Secretion not con- 

 tinuous, 541. Composition, 542. Action, 

 558-561. In animals, 598. Present in small 

 intestine, 561. 



Pancreatin, 74, 542 



Panse of Ruminants, 583 



Papillae of cutis, 356. of teeth, 969, 995. 

 of kidney, 770. of tongue, 373. 



Parapeptone, 547 



Parenchyma of Organs (see those Organs) 



Parotid glands, 31, 521 



Parthenogenesis, 936, 940 



Pathetic nerve, 250, 264 



Paunch of Ruminants, 583 



Peduncles of cerebellum, 245. of cere- 

 brum, 237 



Pelvis, points of adaptation, 171. of kid- 

 ney, 770 



Pepsin, 74, 528, 548. Special action of, 551. 

 Properties of, 551. Source of, 905. 



Peptone, 547 



Perception, 291, 300 



Percussion of chest, 815 



Perennibranchiate Amphibia, 694. Circula- 

 tion, 694. Respiration, 869, 870. 



Pericardium, 33, 632. absent in Amphi- 

 oxus, 689 



Perichondrium, 46 



Periinysium, 49 



Periodontal membrane, 493 



Periplast, 981 



Peristaltic or vermicular contraction, 133, 513, 

 514 



Peritoneum, 36, 507, 511, 969 



Perivisceral cavity of Actinozoa, 592 



Perspiration, 791. Insensible, 792. Sensible, 

 792. Chemical composition, 792, Uses, 

 792, 793. Average quantity exhaled in 24 

 hours, 793. Quantity influenced, 793, 794. 

 Suppression of, 794. Use of in regulating 

 heat of body, 878 



Pettenkofer's test for bile, 787 



Peyer's glands, 67, 97, 543, 605 



Pharynx, 95, 98, 502, 503. Action on degluti- 

 tion, 503. Closed sacs, 741. In animals, 582 



Phosphates, elimination of, 932 



Phosphatic calculi, 784 



Phospbenes, 452, 456, 469 



Phosphorescence of animals, 890 



Photic work, 891. of body, 914. 



Photometers, 446 



Phrenic nerve, 254 



Phrenology, 292 



Phthisis and imperfect ventilation, 859 



Physics, methods of research in, 911, 912 



Physiology, General, 88. Special, 129 



Pia Mater, 29, 236 



Pigeon, mode of feeding young, 573 



Pigment-cells, 66, 73, 994 



Pineal gland or body, 243, 282, 964 



Pitch of a sound, 203 



Pituita, 382 



Pituitary body, 738. membrane, 382 



Placenta, origin of, 947. Structure and uses, 



958. Maternal, 947, 958. Detachment of 

 part of, 959. Foetal part of, 948, 958. Dif- 

 fused, 959. Cotyledonous, 959. Discoid, 



959. Zonular, 959 



Plants, classification. 117. Resemblances be- 

 tween them and animals, 121. Differences 

 between them and animals, 121. Respira- 

 tion in, 119, 796. Structure and functions, 

 118. Tissues of, 119, 981 



Plasma of the blood. 57, 96, 700 



Plastic deposits, 706. food, 484, 900, 907, 

 918 



Pleura, 31, 800. Costal, 800. Cavity of, 800 



Pleural chamber of thorax, 800 



Plexuses of vessels (see Capillaries and Lym- 

 phatics) . of spinal nerves, 254. of 

 sympathetic nervous system, 256 



Plici-dentine, 579 



Pluteus, 938 



Pneumogastric nerves, 252. Function of, 

 265. Influence on biliary secretion. 760, 

 761. Effect of division of, 817; on glyco- 

 genic function, 749 



Poison fangs in serpents, 577 



Pollen cells, 941 



POLYZOA. Digestive organs, 590. Digestive 

 glands, 594. Circulation, 697. Respiration, 

 871. Touch, 371. . 



Pons Vti olii, 237. Fibres of, 246. Functions 

 of, 282. Development of, 963. In Verte- 

 brata, 327 



Portal canals, 535 



Portal blood is source of bile, 760. Circula- 

 tion, 533. In animals, 690, 692 



Portal vein, 533 



Portio dura, or facial nerve, 251, 265. 

 mollis, or auditory nerve, 251, 263, 399, 411 



Posture, erect, 168. recumbent, and mode 

 of rising, 167. sitting, and mode of ris- 

 ing, 168. Effect of on the pulse, 654 



Precursory cartilage, 986. membrane, 986 



Preformative membrane, 995 



Prehensile limbs of quadruped Mammalia, 180 



Prehension and manipulation in animals, 196. 

 in Man, 193. of food in animals, 572, 

 574 



Presbyopia, 445 



Pressure, sensibility to, 365 



Primitive streak or trace, 953. Optic vesicles, 

 965. Dental groove, 969 



Primordial vertebrae, 960. kidneys, 960 



Proboscis of Annulosa, 574. of Elephant, 

 197, 572 



Process, Meckel's, 968 



Proglottis, 938 



Progression upon solids, 166, 167. under 

 water, 166. upon a fluid, 166. In water, 

 166, 183. through the air or flight, 

 167 



