Poor have larger stomachs than the rich, 67. Their food too scanty and innutritious, 247. Their minds thereby deteriorated, 249. Precocity of talent little to be desired, 270. Purgatives, their mode of action, 158, 162. Not required by nature, 238. When improper, 329. Putrefaction, digestion different from, 110. Pylorus, 67. Allows only digested food to issue from the stomach, 132. Quantity of food proper to be eaten, 218. Rapid eating improper, 51, 122. Reading during meals improper, 52. Rectum, 179. Respiration, use of, 63. Digestion aided by, 126, 180. Necessary for the conversion of chyle into blood, 168. Aids the action of the bowels, 332. Rice, 118, 138, 284. Roget, Dr, quoted on nutrition, 26; on varieties of food, 59. Rumination of animals, 42, 50. Stomach of ruminants described, 69. Sago, 138, 284. Saliva, secretion and purpose of, 49. Its amount greatest when food spicy, 53. Different in quality from gastric juice, 99. Salt meat, how productive of thirst, 37. Sanguification, 63, 167. Satiety, 220. Schools, children too much confined and tasked in, 269. See _Boarding Schools_. Scrofula frequently the result of a penurious diet, 250, 278; also of too exciting food, 276. Sedentary habits, how productive of indigestion, 24, 301; and costiveness, 159, 180, 332. Less food required by sedentary than by active persons, 228, 299. Sheridan a dunce at school, 270. Siesta, 295. Skin, its sympathy with the bowels, 161, 325. Smith, Dr Southwood, quoted, 185, 248. Soldiers, private, why inferior in strength and health to officers, 248. Ought not to eat immediately after a march, 293. Soup, digestion of, 117, 125, 139, 281, 312. Spirits, their indiscriminate use hurtful, 316. Spittle, 49. See _Saliva_. Spleen, 170. St Martin, Alexis, remarkable case of, 88. Suggestion as to farther observations on, 92, _note_. See _Beaumont_. Stays injure the action of the bowels, 159, 180, 333.