648 



INDEX. 



Social mechanics, 602. 



Society of insects, 604. 



Sociology, comparative, 602. 



Sodium, chloride of, 62 ; use of, 77. 



Soemmering on leg, 580 ; spot of, 385, 397. 



Soil, influence of, 476. 



Solar plexus, 350. 



Somnambulism, 557. 



Song and speech, distinctions of, 352. 



SOUL, existence of, 283 ; independence of, 

 285, 548. 



SOUND, peculiarities of, 361 ; analogy of, to 

 light, 379 ; articulate, 539. 



Spain, colonial empire of, 632. 



Spallanzani on food, 65. 



Speaking machines, 356. 



Species of plants, 479 ; changes in, 480, 484. 



Speech, 539. 



Spermatic fluid, 517. 



Spermatozoa, 517 ; development of, 518. 



Sperm-cell, 516. 



Spherical aberration, 386. 



Sphinx ligustri, 279, 308, 313, 607. 



Spinal axis, 291. 



SPINAL CORD, 294, 296 ; reflex action of, 300 ; 

 comparative anatomy of, 300 ; divisions of, 

 296 ; connection of, with brain, 302 ; func- 

 tions of, 303. 



Spinal nerves, roots of, 303. 



Spiracle of insect, 157, 352. 



Spiral vessels, 498. 



Spirit, 24. 



Spirostreptus, 301. 



Spissitude of blood, 169, 190. 



Spitting, habit of, 47. 



Spleen, 211. 



Spongioles, 87, 466. 



Spontaneous gemmation, 536. 



Stages in introduction of air, 160. 



Standards, fixed physiological, 13 ; tables of, 

 15. 



Standing, 453. 



Stapedius, 365. 



Starch, 71. 



Starvation, 182. 



Stearine, 246. 



Steenstrup on generation, 537. 



Steno, duct of, 43. 



Stereoscope, 397. 



Still layer, 143. 



STOMACH, 41, 42; types of, 42 ; temperature 

 of, 49 ; regions of, 60 ; histogenetic diges- 

 tion of, 63 ; blood-vessels of, 102 ; mucous 

 surface of, 50, 58 ; follicles of, 50 ; hydroid 

 nature of, 51 ; trituration by, 55 ; secre- 

 tions of, 48 ; various forms of, 59 ; move- 

 ments of, 52. 



Stove, warming by, 181. 



Strecker on bile, 204. 



Striated muscular fibre, 433, 436. 



Stucco, endosmosis through, 107, 152. 



Subdivisions influenced by heat, 79. 



Subjective operations, 287 ; images, 398. 



Submaxillary saliva, 43. 



Suction, act of, 228. 



Sudoriparous glands, 237, 238. 



Sulphocyanide of potassium, 43. 



Sulphur, 17, 23, 27. 



Sunlight, 458 ; consumption of, 459 ; uses of, 



466 ;' variation of, 483. 

 Supplemental air, 165. 

 Supra-renal capsules, 214. 

 Swimming bladder, 157. 

 SYMPATHETIC SYSTEM, 344; peculiar fibres 



of, 262 ; origin of, 345 ; connected with 



spinal, 345 ; ganglia of, 346. 

 Sympathy depends on circulation, 112. 

 Synthetical mind of Asiatic, 592. 

 Syntonin, 438. 

 Systemic circulation, 134. 



T. 



TADPOLE, experiments with, 489. 



Talking birds, 352. 



Taste, 427 ; nerves of, 429. 



Taurine, 204, 208. 



Teeth, 40 ; development of, 539. 



Teleology, 415. 



TEMPERATURE, effect of, on body, 177 on 

 skull, 590 ; extremes, 178. 



Tendons, 439. 



Tensor tympani, 365. 



Tenth pair of nerves, 340. 



Testis, 516; secretion of, 517. 



Thackrah on effect of want, 587. 



Thenard on perspiration, 240. 



Third pair of nerves, 333. 



Thoracic duct, 90. 



Tickling, 422. 



Tidal air, 165. 



Time, introduction of, into nervous mecha- 

 nism, 269, 287. 



Tin, trade in, 619. 



TISSUE, cellular, 497; mnriform, 497 ; fibro- 

 cellular, 497; vascular, 498 ; yellow fibrous, 

 499 ; white fibrous, 499 ; areolar, 499. 



Tongue, 428. 



TOUCH, structure of organ of, 417, 418 ; acute- 

 ness of, 420; in animals, 421 ; connected 

 with vision, 419. 



Tournefort on plants, 472. 



Toynbee on ear, 365. 



Tracts of spinal cord, 303 ; of brain, 318. 



Tradescantia Virginica, circulation in, 132. 



Traditions, 567. 



Trains of thought, 329. 



Transverse transmission in spinal cord, 298. 



Trembley on hydra, 501. 



Trigemini, 334. 



Trisplanchnic nerve, 344. 



Turner on smell, 427. 



Twelfth pair, 343. 



Twins, similarity of, 509. 



Tympanum, 360, 365. 



Type, ideal, of man, 565, 611. 



U. 



UNIPOLAR NERVE-CELLS, 263, 268. 

 Universal history, 611. 

 Urea, 447. 



URINE, 218 ; composition of, 219 ; urea con- 

 tained in it, 220 ; hippuric acid in, 222 ; 



