750 



INDEX. 



The Numbers refer to the Paragraphs. 



Spermatic fluid, 867 



Spermatozoa, 900, 901 ; function of, 900, 911, 

 917; development of, 902 



Sphincters, action of, 391, 392 



Sphinx ligustri, Nervous system of, 325 



Spinal accessory nerve, 411 



Spinal Cord of Vertebrata, 346350 ; its com- 

 parative anatomy, 346 ; its divisions, 346, 



347 ; its connections with the nerves, 347, 



348 ; functions of several parts of, 349, 350; 

 general functions of, 363' 373 ; absence of 

 proper sensibility in, 365 ; protecting agency 

 of, 394 396; maintenance of muscular ten- 

 sion through, 398, 399 ; influence of, on 

 heart, 717 a; power of sustaining locomo- 

 tive actions, 397 ; pathological conditions of, 

 400,401,501504 



Spinal nerves, double roots of, 344 

 Spinal system, nerves of, 402 421 

 Spleen, structure of, 683 ; functions of, 684, 



685 



Sponges, 1, 7 

 Spongioles of Plants, 107 

 Stammering, causes of, 617, 618; treatment 



of, 619 

 Star-fish, structure of, 8 10; nervous system 



of, 312, 314 



Stark, Dr., his analysis of Bone, 196 b 

 Stearine, composition and properties of, 185 a 

 Stereoscope, 546, 547 

 Stilling, Dr., his researches on the Spinal 



Cord, 347 



Stomach, presence of, characteristic of Ani- 

 mals, 2 ; general characters of, 655 ; state 

 of, in health, 657; in disease, 758 ; sense of 

 hunger referred to, 637 ; movements of, 387, 

 413, 659; influenced by nerves, 387, 413 ; 

 secretions of, 665, 873 ; influence of nerves 

 on, 414, 415 ; effects of blows on, 580, 625 

 Stomato-gastric system, of Mollusca, 319, 320 ; 



of Articulata, 332334 

 Strabismus, 454 a-d 

 Strangury, 504 



Strings, vibrating, laws of, 606 a 

 Strumous diathesis, 878 (see Tubercle) 

 Subjective sensations, 516, 518, 521 

 Suction, act of, 386 c 

 Sudoriferous glandulse, 868 ; their secretion, 



869, 870 



Sulphur, contained in food, 648 ; in proteine- 

 compounds, 113, 114; oxidation of, in sys- 

 tem, 847 



Superfo3tation, 933 

 Suppuration, 799 801 

 Supra-renal capsules, 686 

 Swimming-bladder, 27 

 Symmetrical diseases, 784, 785 

 Symmetry, radiate, 8 ; bilateral, of Articulata 

 18; of Vertebrata, 25; deficiency of, in 

 Mollusca, 12 

 Sympathetic System, peculiar fibres of, 244 , 

 general structure of, 338, 341, 342; influ- 

 ence of, on movements of intestinal canal 

 388, 389 ; on ureter and muscular coat o 

 bladder, 390 ; on uterus and fallopian tubes 

 393; on heart and vessels, 416, 623, 717 b 

 730, 732 ; on ductus choledochus, 825 / 

 on processes of organic life, 620 628 

 Sympathies, motor, 620 623 ; organic, 625 

 628 



Syncope, 580, 814 

 Synovial Membranes, 175 

 Syro-Arabian nations, 94 



T. 



TALIACOTIAN operation, 253 



Taste, nerves of, 407, 447 



Taste, sense of, 527 530 ; nerves concerned 

 in, 407, 447; conditions of, 528 : partly de- 

 pendent on smell, 529 ; educability of, 530 ; 

 purposes of, 529 



Teeth, 208 217 ; component tissues of, 208 

 216; development of, in Human infant, 

 217, a-i ; a test of age, 217 k, I, m 



Temperature, sense of, 514, 524 ; ordinary, of 

 the human body, 886 ; extremes of sustain- 

 able by Man, 887, 888 ; (see Heat) 



Tendons, structure of, 140 ; attachment of to 

 muscle, 233 



Tenesmus, 504 



Tension of Muscles, 398, 399 



Tetanus, 401, 502 



Testis, structure of, 866 ; development of, 866 

 b ; secretion of, 867 



Tessier's experiments on duration of gestation, 

 931 



Thackrah, Mr., his observations on coagula- 

 tion of blood, 703 



Thalami Optici, 423, 424 



Thaumatrope, 551 



Third pair of Cranial Nerves, 405 

 ventricle of Brain, 358, 359 



Thirst, sense of, 639 



Thorax, movements of, in respiration, 760, 

 761 



Thymus gland, 687,688 



Thyroid gland, 689 



Tiedemann, his researches on absorption, 675 



Tissues, elementary, classification of, 137 



Todd, Dr., on mucous membrane, 873 



Tomes, Mr., his observations on bone referred 

 to, 196, 203, 207 



Tongue, papilla of, 527 ; movements of, 418, 

 419 



Tonicity of muscles, 593 597 ; of arteries, 

 731 ; effects of deficiency of, 745 



Tortoises, 29 



Touch, nerves of, 448 



Touch, sense of, 522 826 ; varying acuteness 

 of, indifferent parts, 522; ideas derived from, 

 514,523; peculiarities of, 524 ; improvability 

 of, 525 ; modifications of, in different ani- 

 mals, 526 ; connection of, with vision, 541, 

 542 



Toynbee, Mr., his researches on non-vascular 

 tissues, 187190 



Trainers' diet, 654 



Transudation, 824 



Travers, Mr., his observations on formation of 

 new vessels, 222; on production of new tis- 

 sue, 795 



Trifacial nerve, 403, 404 



Tubercula Quadrigemina, 422, 436 



Tubercular matter, 807, 808 ; tendency in the 

 system to deposit, 878 



Tubular tissues, simple, 218 222; compound, 

 223253 



