INDEX. 



641 



Cheselden's case of cataract, 419 ; on the ear, 

 365. 



Chest, type of, 161. 



Chilians, 576. 



Chimpanzee, 581. 



Chinese, 574 ; writing, 636. 



Chitin in wings of insects, 71. 



Chlorine and hydrogen, 471. 



Cholepyrrhin, 124. 



Cholera, effect of, 22. 



Cholesterine, 275. 



Chorda dorsalis, 528. 



Chorion, 523 ; changes in, 525. 



Choroid coat, 384 ; function of, 394. 



Chossat on inanition, 178, 243. 



CHBISTIAN CHURCH, 626 ; spread of, in Amer- 

 ica, 598. 



Chromatic aberration, 386. 



Chronometer, illustration of heart by, 140. 



CHYLE, 53 ; absorption of, 87 ; causes of the 

 flow of, 89 ; composition of, 92 ; corpuscles, 

 first appearance of, 94 ; action of water and 

 acetic acid on, 94. 



Chyme, 53. 



Cilia, 431. 



Ciliated animacule, 432. 



CIRCULATION, 145 ; objects of, 111, 134 ; 

 changes during, 126 ; course of, 134 ; in 

 plants, 132 ; in lower animals, 135 ; action 

 of heart in, 138 ; sounds of heart in, 139 ; 

 nervous influence on, 140 ; foetal, 531 ; pla- 

 cental, 527; portal, 134; connection of 

 parts by, 112 ; dependence of, on respira- 

 tion, 133. 



Civil law, 628. 



Civilization, effect of climate on, 599 ; com- 

 pared with barbarism, 604. 



Classification of natural history, 506 ; of 

 skulls, 586. 



Climates, botanical, 481. 



Clock, illustration from, 485. 



Coagulation of blood, 113. 



Cochlea, 364, 368 ; comparative anatomy of, 

 373. 



Cceliac axis, ramifications of, 49. 



Coinage, introduction of, 620. 



Cold-blooded animals, 172, 176. 



Coleridge on dreams, 556. 



Colladon on diving-bell, 366. 



Color, origin of, 589. 



Colored rays, effect of, 461. 



Colostrum, 225. 



Combustion, artificial, 17 ; organic, 17, 18. 



Commerce, origin of European, 619. 



Comminution instruments, 40. 



Commissures, function of nervous, 280. 



Comparative history, 612. 



Compartments of ruminant's stomach, 60. 



Complemental air, 165. 



Complexion of man, 571, 572. 



Conception, 530. 



Condensing action of membranes, 155. 



Condition of dreams, 558. 



Condorcet on dreams, 556. 



Conductibility in nerves, 265. 



Conferva, 495. 



Congelation, perpetual, 473. 



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Conjugation, modification of, 515. 

 Consonants, 356 ; explosive and continuous, 



357. 



Constant temperature, problem of, 176. 

 Constituents of plants, sources of, 4G3 ; of the 



blood, functions of, 125. 

 Contarini, Cardinal, on circumnavigation, 625. 

 Contractile fibre-cells, 435. 

 CONTRACTILITY of muscle, 442, 449 ; nature 



of, 442. 

 Contraction, hypothesis of, 451 ; by water, 



451 ; by touch, 452 ; after death, 444. 

 Control of heat by nerves, 186. 

 Converging media, 381. 

 Cooling agencies, 184. 

 Cord, spinal, 294 ; conduction by, 299. 

 Cornea, 384. 

 Corpuscles, of milk, 225 ; of fat, 246 ; of 



blood, 116; origin of, 101, 115; colorless, 



93, 115 ; of chyle, 93, 143 ; proportion of, 



125. 



Cotyledons, 526. 

 Couch on metamorphosis, 510. 

 Course of the bile, 202. 

 Crab, edible, 510. 

 Cranial nerves, 333. 

 Creatine, 447. 



Crevice, passage of water through, 105. 

 Crime, tendency to, 543. 

 Crises, change by, 148, 484. 

 Crus cerebri, 314 ; cerebelli, 314. 

 Crusades, 630. 

 Crystalline lens, 386. 

 Crystals of blood, 119. 

 Cutaneous absorption, 98. 

 Cuvier on organisms, 466. 

 Cycles of progress, 512. 



D. 



DALTON on corpus luteum, 522 ; on diffusion, 

 152. 



Daubenton on skull, 580. 



Davy on animal heat, 178; on meconium, 

 203 ; on protoxide of nitrogen, 412. 



Deafness in diving-bell, 366 ; partial, of infe- 

 rior animals, 377. 



Death, 560 ; from accident and old age, 561. 



Decay, 243. 



Deception, 404 ; of touch, 421. 



Deleau on the voice, 356. 



Descartes on insects, 609. 



Descent of dhp, causes of, 87, 132. 



Despretz on animal heat, 182. 



Deutencephalon, 292. 



DEVELOPMENT, 505 ; of the ear, 378; of the 

 eye, 380 ; of muscle, 440 ; geometrical 

 modes, 447 ; of bird, 35 ; of heart, 135. 



Diaphragm movements, 161. 



Diastose salivaire, 45. 



Diet, 34. 



Differences in men, 563. 



DIFFERENTIATION, 500 ; causes of, 502 ; in- 

 fluence of heat on, 503 ; epochs of, 504 ; 

 defined, 511. 



DIFFUSION of gases, 152 ; force of, 153, 156; 

 general facts of, 156 ; effect of, 162. 



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