INDEX. 



565 



Pulp of teeth, 310, 313, 314. 



Pulsations of heart, 579. 



Pulse, in arteries, 583, 584 ; respiratory, in 



veins, 607. 



Pupil, changes in diameter of, 969. 

 Purpurine, 736. 

 Pus, 632-637. 

 Pyramids, anterior, 890. 

 posterior, 893. 



RADIATA, Nervous system of, 849. 



Receptaculum Chyli, 497. 



Red corpuscles of blood, characters of, 215, 



216; development of 217-220. 

 Reduction of food, provisions for, 445. 

 Reflex actions, nature of, 392-396. 



of Articulata, 858-860; of 

 Mollusca, 850, 851, 854; of 

 Vertebrata, 875-879, 884. 

 Regeneration of parts, influence of heat upon, 



129; of nerve, 389. 

 Reproductive cells, 240-242. 

 Reptiles, circulation in, 562, 563 ; lymphatic 

 system in, 499 ; respiration in, 668-671 ; 

 nervous centres in, 871. 

 RESPIRATION, nature of the process, 641 ; 

 sources of demand for it, 

 642-648; mode of its per- 

 formance, 649-652. 

 organs of, in lowest animals, 

 653; in Mollusca, 654-656; 

 in Annelida, 657; in Crus- 

 tacea, 658 ; in insects, 659, 

 660 ; in Spiders, 661 ; in 

 Fishes, 663-667 ; in Rep- 

 tiles, 668-671 ; in Birds, 

 672-674; in Mammalia and 

 Man, 675-678. 

 movements of, 679-688. 

 chemical phenomena of, 689- 



702. 

 insufficient, effects of, 703- 



709. 

 Respiratory nerves, in Insects, 862 



luscs, 850-853; 

 895. 



in Mol- 

 in Vertebrata, 684-688, 



Respiratory pulse, 607. 

 Restiform bodies, 892. 

 Retina, general structure of, 960. 

 Rigor Mortis, 367-369. 

 Ruminating stomach, 457. 



Saccharine compounds in food, 430-434, 493. 

 Salivary glands, 465. 



secretion, 446, 466, 467. 

 Satiety, sense of, 486. 

 Sebaceous follicles, 747, 748. 

 Secreting cells, 238, 239, 712-714. 

 SECRETION, nature of the process, 710-713. 



effects of suppression of, 711. 

 Segmentation of vitellus, 805. 

 Selecting power of individual parts, 612-615. 

 Semicircular canals, 952. 

 Sensation, 389, 390, 930, 931 ; nerves of, 389, 



390, 900, 901 ; general and special, 932. 

 Sensations, regulation of muscular movement 



by, 902-904. 

 Sensorium, 390. 

 Sensory Ganglia, 900, 901 ; functions of, 902 



-905. 



Sensory nerves, 906, 907. 

 Serous membranes, 197, 198. 



Shell, of Echinodermata, 278, 279 ; of Mol- 

 lusca, 280-285; of Articulata, 284-286. 



Sight, sense of, 955-972. 



Single vision with two eyes, 963. 



Size of objects, estimate of, 968. 



Skin, 199, 205, 742-748, 940. 



Sleep, 924. 



Smell, sense of, 946-948. 



Sneezing, 948. 



Solen, nervous system of, 852, 853. 



Somnambulism, 924. 



Sounds, propagation of, 949 ; qualities of, 954. 



Sounds of heart, 571-575. 



Speech, 981, 982. 



Sperm-cells, 240, 241, 780, 783. 



Spermatic fluid, 786, 787 ; emission of, 790. 



Spermatozoa, 240, 786, 787; use of, in fecun- 

 dation, 803, 804. 



Sphinx ligustri, nervous system of, 856, 857. 



Spiders, respiratory organs of, 661. 



Spinal Cord, 867, 868 ; its independence of 

 the Brain, 874-879; structure of, 880- 

 883 ; reflex actions of, 884 ; disordered states 

 of, 885-887. 



Spinal accessory nerve, 580, 888. 



Spinal nerves, origin of, 880, 882. 

 peculiar, 888. 



Spiracles of Insects, 659. 



Spleen, structure of, 506 ; uses of, 507-509. 



Stammering, 983, 984. 



Starchy compounds in food, 430-434. 



Star-fish, nervous system of, 849. 



Starvation, Chossat's experiments on, 117. 



Stearine, 259. 



Stereoscope, 964, 965. 



Stomach, 447, 448 ; movements of, 458, 459. 

 in Ruminants, 457. 



Stomato-gastric nerves of Invertebrata, 863. 

 of Vertebrata, 896. 



Strabismus, 963. 



Suction, act of, 896. 



Sudoriparous glandule, 743, 744. 



Supra-renal capsules, 510. 



Sympathetic System, in Man, functions of, 



926-929. 



traces of, among Invertebrata, 

 864. 



Syncope, 581, 628. 



Synovial membranes, 197, 198. 



Tadpole, respiration of, 670 ; metamorphosis 



of, 670. 



Taste, nerves of, 944. 

 sense of, 945. 

 Teeth, structure and development of, 310- 



327. 



Temperature, sense of, 933, 942. 

 Testis, structure of, 786. 

 Tetanus, 886. 

 Thalami Optici, 901. 

 Thirst, 488. 

 Thoracic duct, 497. 

 Thymus Gland, 511, 512. 

 Thyroid Gland, 513. 

 Tickling, 907. 

 Tongue, papilla) of, 943. 

 Tonicity of arteries, 365, 584 ; of muscle, 364 



-366. 



Torpedo, electricity of, 771-774. 

 Torpidity, induced by cold, 97, 98, 136; by 



want of moisture, 158-161. 

 Touch, sense of, 939-942. 

 Tubercula quadrigemina, 869, 870-873, 900. 



