Sense organs, simple forms of, 341, 342 Serous coat, 140, 148. Serous membrane, 264. Serum albumin, 30. Serum globulin, 30. Shortsightedness, 384. Shoulder girdle, 226. Sight, organs of, 373. Sigmoid flexure, 158. Simple life, 410. Skeleton, 216-243. How deformed, 234. Hygiene of, 233. Plan of, 221. Purpose of, 221. Skin, 264-277. As regulator of temperature, 270. Experiments on, 349. Functions of, 267, 268. Observations on skin, 278. Skin wounds, treatment of, 275. Skull, 225. Sleep, 329. Small intestine, 151. Mucous membrane of, 151. Muscular coat of, 152. As organ of absorption, 173. Parts of, 151. Serous coat of, 152. Work of, 157. Smell, Sensation of, 346. Value of, 347. Sneezing, 81. Sodium, 135. Sodium carbonate, 155. Sodium chloride, 122. Soft palate, 141. Solution, 131. Kinds of, 73. Solution theory, 156. Solvents, 131. Sound, To illustrate origin of, 367. To show transmission of, 367. Sound waves, As stimuli, 331. Nature of, 350. Reënforcement of, 352. To show effects of, 368. Value of, 353. Speech, production of, 357. Spinal column, 223-225. Hygiene of, 233. Spinal cord, 280. Protection of, 299. Spinal nerves, 295. Double nature of, 295. Spitting, 403. Spleen, 208. Sprains, 239, 240. Stapes, 359. Starch, 162. Action of, on saliva, 171. Animal, 120. Tests for, 136. Steapsin, 155, 156. Stegomyia, 403. Sternum, 225. Stomach, 147. Mucous membrane of, 147. Muscular action of, 150. Muscular coat, 148. Serous coat, 148. Storage of nutriment, 177-179. "Strenuous life," 410. Striated fibers, to show, 261. Striated muscles, to show, 261. Stroma, 25. Sugars, kinds, 120. Sulphur, 135. Supra-renal bodies, 208. Suspensory ligament, 377. Sutures, 230. Sympathetic ganglia and nerves, 298. Work of, 316. Synovial fluid, 231. Synovial membrane, 231. System, defined, 20. Systole, 46. Taste buds, 345. Tea, Effects on digestion, 167. Effects on heart, 56. Tears, 383. Teeth, 142. Care of 163. Kinds of, 143. Temperature, Body, 207. Corpuscles, 271, 345. Sensation, 343. Tendon of Achilles, 256. Tendons, 246. Tests for foods, 136, 137. Tetanus, 262, 275. Thoracic cavity, 7, 85, 100, 102. Thoracic duct, 67, 170. Thorax, 85. Bones of, 225. Tissue enzymes, 182. Tissues, 4. Complex nature of, 13. Defined, 20. General purposes of, 5. Kinds of, 5, 6. Observations on, 12. Properties of, 6. Tobacco, effect on heart, 56. "Tobacco heart," 56, 333. Tongue, 143. Tonic bath, 273. Touch, 343. Touch corpuscles, 342. Toxins, 394. Trachea, 80. Trypsin, 155, 156. Tuberculosis, 90, 92, 94, 98. How communicated, 403. Outdoor treatment, 98. To prevent, 404. Tympanum, 359. Typhoid fever, 404, 407. Ulna, 227. Urea, 110, 205, 207, 210. Ureters, 170. Uriniferous tubules, 203. Vaccination, 406.