INDEX. 



741 



The Numbers refer to the Paragraphs. 



Decay, constant in Animal body, 268, 632, 633, 



750 (see Disintegration) 

 Decidua, formation of, 919 

 Decomposition, continual, in living beings, 268, 



632, 633 (see Disintegration) 

 Decussation, of optic nerves, 445 

 Defecation, movements concerned in, 391, 392 

 Degeneration, of nervous structure, 263, 292 

 296; of muscular fibre, 239, 263, 586; of ele- 

 ments of blood into pus, SOO, 805 ; into tu- 

 bercle, 807. SOS 



Deglutition, 382386; a reflex action, 382, 

 383 ; nerves concerned in, 384, 385; actions 

 preceding, 386 a-c; in Polypes, 382 

 Delaroche and Berger, their experiments on 



Animal Heat, S8S 

 Dental groove, 217 

 Dentine, 208; structure of, 210; composition 



of, 212; development of, 213, 214 

 Dermo-skeleton, 20 

 Despretz, M., his researches on animal heat, 



S92 

 Devergie, M., his table of development of foetus 



at different ages, 947 

 Diabetes, 879 



Diaphragm, movements of, 761 

 Diathesis, gouty, S7S, S84; saccharine, 879; 



tubercular, 878 

 Diet-scale, see Food 

 DIGESTION, 



General account of, 270; in lower Animals, 

 655; alimentary materials, 641 ; their re- 

 spective destinations, 642 647; inorganic 

 substances, 648; relative digestibility of 

 different kinds of food, 666; importance of 

 bulk, 666 



Processes of, 656 662 ; mastication and 

 insalivation, 656; deglutition, 656; con- 

 dition of stomach in, during health, 657 ; 

 disorder of, 658 ; entrance of food into 

 stomach, 659 ; movements of stomach, 

 659; expulsion into duodenum, 660; pas- 

 sage along intestines, 661 ; discharge of 

 faeces, 662 



Chemical phenomena of, 663 671 ; compo- 

 sition and properties of gastric juice, 664; 

 its chemical action, 665, 667 ; artificial so- 

 lution of food , 668 ; Wasmann's researches 

 on pepsin, 668 ; Bernard and Barreswill's 

 researches, 669 ; conversion of saccharine 

 and oleaginous principles, 670, 671 

 Influence of nerves upon, 387, 413 415 

 Interstitial, according to Dr. Prout, 681 

 Digestive cavity in lower animals, 655 ; origin 



and formation of, 937, 945 

 Direction, law of visible, 543 

 Discs, of Blood, see Corpuscles 

 Disintegration of Muscular tissue, 239, 263, 



586 ; of Nervous tissue, 263, 292296 

 Distance, adaptation of eye to, 536 ; estimate 



of, 548 



Diving animals, 77S 

 Dobson, Mr., his experiments on the Spleen, 



f*c* " 



6So 



Domesticability of Animals, 39, 42 

 Donne, M., his observations on Milk, 854 a, 



856 ; on temperature in disease, 886 

 Doris, gills of, 755 

 Dormant Vitality, 255 

 Dorsal vessel of Articulata, 18 



Double consciousness, 500 



Draper, Professor, on Capillary Circulation 713, 



741 



Dreaming, 499 

 Dugong, heart of, 710 

 Dulong, M., his researches on animal heat, 



892 



Dumas, his analysis of fibrine, 114 

 Duration of life in individual parts, 810 812 

 Dytiscus, experiments on, 328 

 Dzondi, on deglutition, 656 



E. 



EAR, general action of, 556; comparative struc- 

 ture of, 557, 558; distribution of auditory 

 nerve in, 559 ; uses of membrana tympani, 

 563; of tympanic cavity, 564; of labyrinth, 

 565, 566 ; of external ear and meatus, 567, 

 568 



Echinodermata, 7 10; shell of, 192 



Educability, of Birds, 39, 479 ; of Mammalia, 

 42, 480 ; of Man, 60 



Edwards, Dr., his experiments on respiration,. 

 769; on animal heat, 888, 893, 894 



Efferent nerves, 289, 344 



Egg, see Ovum 



Egg-shell, Membrane of, 118 



Ehrenberg, on limits of vision, 540 



Eighth Pair of Nerves, see Glosso-pharyngeal, 

 Par Vagum, and Spinal Accessory 



Ejaculatio seminis, 372, 393, 904 



Elaboration of fibrine, 116, 154 159 



Elasticity of arterial walls, 728, 729 



Elastic tissues, 138, 139 



Electricity, not identical with nervous power, 

 297 



Embryo, early development of, 915917, 934 

 945 ; formation of germinal mass, 935 ; of 

 germinal membrane, 935, 936 ; of vertebral 

 column, 937; of amnion, 938 ; of vascular 

 area and umbilical vessels, 938, 939 ; of 

 heart and branchial arches, 940 ; of allan- 

 tois, 941; of umbilical cord, 941, 942; later 

 circulation in, 943, 944 ; influence of mo- 

 ther on, 946 ; table of development, 947; 

 size and weight of at birth, 948; proportion 

 of males and females, 949 ; relative viability 

 of, 950 



Embryonic cell, 935, 936 



Embryonic development, of brain, 358, 359, 

 361 ; of cephalic nerves, 420, 421 ; of lungs, 

 757 b, c ; of blood-corpuscles, 149 ; of liver, 

 826 g; of kidney, 839 c ; of heart, 940 ; of 

 circulating apparatus, 940, 943, 944; of di- 

 gestive cavity, 945 



Emissio seminis, 372, 393 



Emotions, influence of on Intelligence and 

 Will, 440; on nutrition and secretion, 625 

 628 ' 



Emotional actions, 437 440 



Enamel, 208; structure of, 209 ; composition 

 of, 212; development of, 215 



Endosmose, 271, 675 



Encephalon, 356 ; comparative anatomy of, 357 

 362 ; weight of, in proportion to entire 

 body, 475 ; proportions of different parts, 

 in Fishes, 357 359 ; in Reptiles, 360 ; in 

 Birds, 361; in Mammalia, 362; in Human 



