Absorption most active before breakfast, 195. Rapid absorption of liquids from the stomach, 38, 79, 117, 140, 195. Acids, in what cases they promote digestion, 104. Acidity of stomach, 283. Ages, different, require different kinds of food, 255. Americans intemperate and rapid eaters, 223, 294. Animal food more digestible and nutritious than vegetable, 118, 138, 281, 283. Cause of its greater digestibility, 140. Also more stimulating, 141. Why apparently more binding, 183. Improper for infants, 264. Anxiety impedes digestion, 300. Aorta, 170. Appetite, its necessity as a warning that nutriment is required, 10, 11. Susceptible of being trained, 32. Not to be relied on when morbid, 34. See _Hunger_. _Thirst._ Arrowroot, 125, 138. Barras quoted on the sensibility of the stomach, 85. Bathing improper immediately after meals, 295. Beaumont, Dr, his view of the exciting cause of hunger, 18. Quoted on mastication, 53. His observations on the stomach of a patient named St Martin, quoted, 73, 78, 88, 106, 112, 128, 133, _et seq._, 283, 285, 289, 308, 319. Makes little pretension to the honour of discovery, 108, 147. Summary of inferences drawn from his experiments, 147. Quoted on the quantity of food proper to be eaten, 219. Bile secreted by the liver, 173. Account of it, 174. Not found in the stomach during health, 175. Its presence there facilitates the digestion of fat and oily food, 285. Birds, gizzards of granivorous, 50, 71. Blaine quoted on hunger, 20. Bladder, 170. Blood circulated in the stomach increased by its action, 77, 289. Breathing necessary for the conversion of chyle into blood, 168. Fulness of blood, 240. Bloodletting improper immediately after meals, 295. Bloodvessels of the stomach, 76. Boarding-schools, time for breakfast and dinner in, 193, 201, 205. Insufficient food often given there, 250, 277.