INDEX. 



1013 



Oxygen absorbed by, 824. Corpora quad- 



rigemina, 803 



Hermaphrodite Animals. 936 

 Heterologous or heteroplastic tumors, 706 

 Hiccup, 818 

 Hip-joint, evidences of special adaptation, 



171 



Hippocampus major, 244. Minor, 244 

 Hippuric acid, 75, 780 

 Histogenetic food, 484, 899, 907, 918 

 Homologies in Animals, 115 

 Homologous or homoplastic tumors, 706 

 Honeycomb of Ruminants, 583 

 Horopter, 459 



Horripilation or goose's skin, 361 

 Horse, daily work of, 917, 920 

 Humors of the eye, 419, 427 

 Hunger, 350 



Hibernation, 887, 888. Respiration in, 836 

 Hydra, reproduction of. 935 

 Hydration, a source of Animal Heat. 882 ; 



in the production of albuminose, 547 ; 



of sugar, 546 

 Hydrogen, effect of breathing, 848. A source 



of Animal Heat, 882. Relation of, to Ani- 

 mal Heat, 916 

 Hydrocarbons, 484. Destination of, 902 ; 



in relation to heat, 918 ; to work, 918 

 Hyocholic acid, 540 

 Hyoid bone, 31, 499, 968 

 Hypersesthesia, 270 

 Hypermetropia, 445 

 Hyperplasia, 705 



Hypertrophy, 705; of muscle, 134 

 Hypnotism, or magnetic sleep, 317 

 Hypoglossal nerve, 252, 267, 375 

 Hypophysis eerebri, 243 



Ideas and Ideation, 291, 295, 296, 297, 300, 



301, 302 



Ideo-motor acts, 301 

 Idiots, brain of, 236 

 Ileo-caecal valve, 516, 517 

 Ileum, intestine, 36, 511, 512 

 Image of Purkinje, 469 

 Images, entoptical, 468 

 Imago, 939 



Incubus, or nightmare, 316 

 Incus, 394, 968 

 Induration, 705, 706 

 Infant, weight and length of, 998 

 Infancy, 999 

 Infants, milk for, 766 

 Inflammation, 705 

 Infundibula of kidney, 770 

 Infundibulum of oviduct, 943 ; of Fallopian 



tube, 947 



Ingesta, daily, 901 

 Infusoria, reproduction of, 933, 935, 937 (see 



Protozoa) 



Ingluvies in Birds, 586 ; of Ruminants, 583 

 Ink-bag of Cephalopods, 590, 790 

 Inhibition of effect of stimuli on motor nerves, 



228 



Inorganic bodies, characters, 124 

 Inorganic proximate constituents of the body, 



71, 82 



Inosite, 76, 711 



Insalivation, 95, 498; in Animals, 581 

 INSECTIVORA. Digestive organs, 582, 585. 



Locomotion, 180 



INSECTA. Digestive organs, 590. Digestive 

 glands, 593, 594, 597. Circulation, 697. 

 Heat, 873. Renal organs, 790. Respira 

 tion, 866, 867; of certain larvae, 871. 

 Luminosity of, 890. Touch, 371. Smell, 

 392. Hearing, 414. Sight, 478, 479. Lo- 

 comotion, 182, 190. Sounds made by, 217. 

 Nervous system, 331-333 



Inspiration, 805-810. Enlargement of thorax 

 in, 805, 806. Muscles of, 807-809. Force 

 exerted in, 814 ; in Birds is passive. 862. 

 Quantity of air taken in. at each, 819 ; 

 quantity breathed in twenty-four hours, 

 821. Supplementary uses of, 817-819. In- 

 gress of air in, how facilitated, 809. First 

 inspiration at birth, 816. Circumstances 

 which modify the number of, 813, 814 



Instincts of Animals, 299, 329 ; of Man, 

 299, 300, 310 



Intellect, 298, 300 



Intercostal muscles, external and internal, 

 807-8. Diagram of, 808. 



Intermuscular septa, 23 



Intervertebral substances, development of, 

 961 



Intestinal canal (see Intestine) ; digestion, 

 560-562; glands of Vertebrata, 597; 

 juice, 95 ; sources and composition of, 542, 

 543 ; action of, 560 ; action of, in animals, 

 598 



Intestines, 36, 95. Length of, in animals, 

 585. Development of, 969. Small, 510, 

 511 ; coats, 512, 513; villi, 513; structure 

 of villi, 603, 604 ; vermicular or peristaltic 

 movements, 513. Large, 514; structure of. 

 514-517; coats of, 514, 515. Passage of 

 food along, 514-517. Contents of, 561, 564. 

 Descent of substances through, 564. Di- 

 gestion in, 560-562. Juices of, 542, 543. 

 Glands, Brunner's, 542 ; Lieberkiihn's fol- 

 licles, 543 ; Peyer's patches, 543, 605 ; soli- 

 tary, 544, 741 ; agminated, 543, 605, 742. 

 Changes of food in, 561. Action of juices 

 of, 560. Gases contained in, 564. Val- 

 vulas conniventes, 513. Contents of small, 

 alkaline, 556. In Vertebrata, 585-589; 

 Mollusca, 589 ; Molluscoida, 590 ; Annu- 

 losa, 590, 591. Annuloida, 591; Coalente- 

 rata, 592 ; Protozoa, 592 



Intrinsic forces of Animal mechanism, 165 



INVRRTEBRATA. Alimentary canal, 589-592. 

 Gastric glands, 593. Liver, 593, 594. Pan- 

 creas, 596. Blood, 695. Bloodvessels, 695, 

 696. Nervous system, 330-335: Touch, 

 371, 373. Taste, 381. Smell, 392. Hear- 

 ing, 414. Sight, 477-480. Locomotion on 

 solids, 183; in fluids, 188; in air, 190. 

 Voice, 217. Prehension, 198. Heat of, 

 873. Digestive organs, 589, 590. Digestive 

 glands, 581, 582, 593-597. Circulation, 

 695-698. Renal organs, 789. Respiration, 

 866-868, 870-872. Prehension of food, 573, 

 574. Denticles, 580, 581. Salivary glands, 

 581. Pharynx, 582 



Involuntary movements, 301 



Iris, 419, 424, 438, 439. Government of, 447. 

 Development of, 966 



Isthmus of fauces, 500 



Ivory, 576 



Jackson, Prof., on semicircular canals, 408 



