Vegetables, continual waste of their substance, 3. How repaired, 5. Quantity of nourishment requisite for them varies with circumstances, 7. Principle of forcing their growth, 8. Vegetable food less digestible than animal, 118, 138, 281, 283; and why, 140. Also less nutritious, 139. Its digestion effected to some extent in the intestines, 181. Why more laxative than animal food, 183, 326. Venison, 286. Vermicular motion of the bowels, 158, 179, 330. Villous or mucous coat of the stomach, 75; and bowels, 160. Vomiting, inverted action of the gullet and bowels in, 57, 158. Vomiting of bile, 175. Voracity, remarkable instances of, 35. Waste universally the attendant of action, 1. Food the means of repairing it in living beings, 5. See _Food_. Waste matter excreted into the bowels, 161, 325. Water safe as a drink, 314. Cold spring-water dangerous when person overheated, 308. Water-brash, 77. Weaning of infants, proper time for, 263. Wine, how productive of thirst, 37. Circumstances in which its use is proper and improper, 314. Preferable to spirits, 318. Worms in the bowels, 163. Youth, appetite keen and digestion vigorous in, 22. Importance of properly regulating the times of eating in youth, 204. Supper frequently necessary, 212. Importance of attending to the development of the body in youth, 271. Period of transition from youth to manhood a critical season, 231. Diseases of the stomach and bowels why then common, 335. See _Children_. _Infancy._ _Mothers._ FINIS. _Lately published, in post 8vo, pp. 438, Price 7s. 6d._ A FOURTH EDITION, ENLARGED AND CORRECTED, OF THE PRINCIPLES OF PHYSIOLOGY APPLIED TO THE PRESERVATION OF HEALTH, AND TO THE IMPROVEMENT OF PHYSICAL AND MENTAL EDUCATION. BY ANDREW COMBE, M.D. FELLOW OF THE ROYAL COLLEGE OF PHYSICIANS OF EDINBURGH, AND CONSULTING PHYSICIAN TO THEIR MAJESTIES THE KING AND QUEEN OF THE BELGIANS. “The work of Dr Combe is, to a great extent, we think, original.”--“The style is so plain, and the arguments so convincing, that no person can fail to perceive how intimately his health and happiness are connected with the truths which the author has endeavoured to enforce.”--“The aim of the author has been to speak to the whole community.”--“His book most admirably applies to persons of all conditions, and to every variety of situation.”--_Quart. Journal of Education, Oct. 1834._