"John H. Brown, M. D., the Berwick AEsculapius, enumerates a long list of patients who had postponed their funeral by following his plan of systematic hygiene--the plan, namely, of 'toning down' plethora by bleeding and cathartics, and of 'toning up' debility by means of beef and brandy. But sixteen hundred years ago the philosopher Lucian called attention to the exceptional longevity of the Pythagorean ascetics, whose religious by-laws enjoined total abstinence from wine and all sorts of animal food. The naturalist Brehm describes the robust physique of a Soudan chieftain who, at the reputed age of one hundred and six years, could hurl a stone with force sufficient to kill a jackal at a distance of fifty yards, and thought nothing of starving for a week or two if his foragers happened to return empty-handed. But the same traveler mentions that his swarthy Nestor now and then compensated such fasts by barbecues lasting from ten to twenty-four hours, and including a _m'elange_ of marrow-fat and pepper-grass, besides dozens of hard-boiled crane's eggs, jerboa stew, and deep draughts of clarified butter. Long fasts certainly enhance the vigor of the digestive organs, but the net result of repeating such experiments seems rather difficult to reconcile with the experience of Luigi Cornaro, the Venetian reformer, who managed to outlive all his cousins and schoolmates, and ascribed his success to the mathematical regularity of his bill of fare, which, during the last sixty years of his self-denying existence, had been limited to twelve ounces of solid food and fourteen ounces of fluids--wine chiefly, a beverage which the Soudanese emir would have rejected with a snort of virtuous horror. Dr. Virchow, though by no means an advocate of total abstinence, admits that the longevity of the Semitic desert-dwellers can be explained only by their caution in the use of stimulants--a virtue which in their case would, indeed, appear to offset an unusual number of circumstantial disadvantages--thirst, fiery suns, and fiery passions being decidedly unpropitious to length of life.