868 INDEX. Buds or Gemmae, distinguished from the ovum, 818. their formation in plants, ib. difference of flower and leaf buds, 838. Bulbus Aortæ, muscularity of, in amphibia and fishes, 241. Cæcum, acid secretion of, 375. acid secretion of, its uses, 402. differs according to food of animal, 342. digestion, supposed to be renewed in it, 402. Calculus, causes of, 332. remedies for, 468. Callus, formation of, 124. not formed by the periosteum, 125. commencement of ossification in, ib. Caloric, its effects as a stimulant, 72. Capillaries, definition of, 189,217. size of, 218. form of their network, 219. size of the meshes of their network, 220. of the lungs, 189, 220. parietes of, 224. structure of, 225. circulation in, ib. cause of equable motion in, 226. resistance offered by them to the blood, ib. rate of circulation in, 227. motion of the blood in, wholly dependent-on the heart’s action, 227. difference of motion of blood in them, 228. return of red particles from them, ib. See Circulation, Capillary, action of different substances on, 233. state of, in inflammation, 235. absorption by the, 249, 252. of the lungs, consequence of their injury, 190. Carbonic acid, generated during respiration, 295. proportion of, contained in the blood, 314. given out by the skin, 315. Cartilages, development and growth of, 107. reproduction of, 123. intervertebral fibro-cartilage, 682. articulating, 680. divisible into four classes, 116. containing peculiar corpuscules, ib. sympathies of, 575. of, with periosteum, 579. chondrinous fibro-cartilage, 116. spongy, and ligamentous, ib. of bone, 117. peculiar base of, 116. Casein, is procured from milk, 103, 160, 852. its general identity with fibrin and albu¬ men, 103. effects of re-agents on, 160. in the serum of the blood, 160. Cell primary. See primary cell. Cells, formation of animal and vegetable tissues from, 106, 113. Cells, formed external to other cells, 107. pigment, 108. arrangement of, to form the different tis¬ sues, ib. nucleated, ib. primordial, resembling blood corpuscules, 113. primary, process of formation, ib. secreting, 420. nucleated, of fat, 421. Cellular tissue, different in plants and animals, 48. intimate structure and development of, 110. of the foetus, ib. yields gelatin, 115, 649. primitive fibres of, 650. contractility of, ib. cause of motions of, 657. sympathies of, 573. Cerebellum, experiments on its functions, 624. effects of lesions of it, of its crura, and of the Pons varolii, ib. its function of causing co-ordination of voluntary movements, 625, 677. relation of, to the sexual instinct, 626. Cerebral nerves, classification of, 519, 597. properties of the fifth nerve, or trigeminus, 519,594. of the glosso-pharyngeal, 520, 595. of the vagus and accessory, 221, 595. of the hypoglossal, 523, 597. of the third, fourth, and sixth nerves, 523, 692. of the facial nerve or portio dura, 322, 594, 595. Cerebro-spinal nerves, organic or grey fibres in, 529. ganglia of, at their union with branches of the sympathetic, 496. compared wTith sympathetic nerves, 494. discoveries of Bell on, 202. Cerebrum, hemispheres of, experiments on, 628. seat of the intellectual faculties, 627. doctrines of Dr. Gall respecting the func¬ tions of the hemispheres, 630. functions of the cerebral commissures, and the pituitary and pineal gland, 631. See Brain. Chara, circular currents in, 176. Chorion, of the human ovum, 843, 844. Cholera, Asiatic, temperature of body in it, 74. Choroid, structure of, in different animals, 721. Chyle, properties of, 404. differences in, arising from varieties of food, globules of, 406. source of its red colour, 407. proportion of fibrin in,—its source, 409. and lymph compared, 266, 411. and blood compared, 411. serum of the, analysis of, 410. state of iron in, 153.