"The intestines are also identical with those of herbivorous animals, which present a large surface for absorption, and have ample and cellulated colons. The coecum also, though short, is larger than that of carnivorous animals; and even here the ourang-outang retains its accustomed similarity. "The structure of the human frame, then, is that of one fitted to a pure vegetable diet, in every essential particular. It is true, that the reluctance to abstain from animal food, in those who have been long accustomed to its stimulus, is so great in some persons of weak minds, as to be scarcely overcome; but this is far from being any argument in its favor. A lamb, which was fed for some time on flesh by a ship's crew, refused its natural diet at the end of the voyage. There are numerous instances of horses, sheep, oxen, and even wood-pigeons, having been taught to live upon flesh, until they have loathed their natural aliment." No one will deny that Baron Cuvier was in favor of flesh eating; but it was not because he ever believed, for one moment, that man was _naturally_ a flesh-eating animal. Man is a reasoning animal (he argues), and intended to be so. If left to the guidance of his instincts, the same yielding to the law of his structure which would exclude flesh meats, should also exclude cookery. Or, in other words, if he is not permitted to depart from the line of life which his structure indicates, he must no more cook his vegetables than eat animal food. Besides, he is made, as Cuvier supposes, for artificial society, and the Creator designed him to _improve_ his food; and, if I understand his reasoning, he is better able, with his present structure of teeth, jaws, stomach, intestines, etc., to make this improvement, and rise above his nature, and yield to the force and indications of reason and experience, than if he possessed any other known living structure. To this structure, however, as well as to the same power of adaptation, the monkey race, and especially the ourang-outang, closely typo approximates. Cuvier's reasoning, in my view, applies only to the adaptability (if I may be allowed the expression) of the human animal, without deciding how far he should avail himself of his power to make changes. DR. LUTHER V. BELL. I have alluded, in another part of this work, to the prize essay of Dr. Bell, awarded to him by the Boylston Medical Committee on the subject of the diet of laborers in New England. Dr. Bell is a physician of respectable talents, and is at present the Physician to an Insane Hospital in Charlestown, near this city.