Then there are beyond doubt persons predestined to obesity, the digestive powers of whom elaborate a great quantity of grease. This physical fact, of the truth of which I am fully satisfied, exerts a most important influence on our manner of looking at things. When we meet in society, a short, fat, rosy, short-nosed individual, with round limbs, short feet, etc., all pronounce her charming. Better informed than others, however, I anticipate the ravages which ten years will have effected on her, and sigh over evils which as yet do not exist. This anticipated compassion is a painful sentiment, and proves that a prescience of the future would only make man more unhappy. The second of the causes of obesity, is the fact that farinacious and feculaferous matter is the basis of our daily food. We have already said that all animals that live on farinaceous substances become fat; man obeys the common law. The fecula is more prompt in its action when it is mingled with sugar. Sugar and grease are alike in containing large quantities of hydrogen, and are both inflammable. This combination is the more powerful, from the fact that it flatters the taste, and that we never eat sweet things until the appetite is already satisfied, so that we are forced to court the luxury of eating by every refinement of temptation. The fecula is not less fattening when in solution, as in beer, and other drinks of the same kind. The nations who indulge the most in them, are those who have the most huge stomachs. Some Parisian families who in 1817 drank beer habitually, because of the dearness of wine, were rewarded by a degree of embonpoint, they would be glad to get rid of. SEQUEL. Another cause of obesity is found in the prolongation of sleep, and want of exercise. The human body repairs itself much during sleep, and at the same time loses nothing, because muscular action is entirely suspended. The acquired superfluity must then be evaporated by exercise. Another consequence is, that persons who sleep soundly, always refuse every thing that looks the least like fatigue. The excess of assimilation is then borne away by the torrent of circulation. It takes possession, by a process, the secret of which nature has reserved to herself, of some hundredths of hydrogen, and fat is formed to be deposited in the tubes of the cellular tissue. SEQUEL. The last cause of obesity is excess of eating and drinking. There was justice in the assertion, that one of the privileges of the human race is to eat without hunger, and drink without thirst. Animals cannot have it, for it arises from reflection on the pleasures of the table, and a desire to prolong its duration. This double passion has been found wherever man exists. We know savages eat to the very acme of brutality, whenever they have an opportunity. Cosmopolites, as citizens of two hemispheres, we fancy ourselves at the very apogee of civilization, yet we are sure we eat too much.