The orang-outang perfectly resembles man both in the order and number of his teeth. The orang-outang is the most anthropomorphous of the ape tribe, all of which are strictly frugivorous. There is no other species of animals in which this analogy exists.[4] In many frugivorous animals, the canine teeth are more pointed and distinct than those of man. The resemblance also of the human stomach to that of the orang-outang is greater than to that of any other animal. The intestines are also identical with those of herbivorous animals, which present a large surface for absorption, and have ample and cellulated colons. The caecum also, though short, is larger than that of carnivorous animals; and even here the orang-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 bringing any argument in its favour. 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. Young children evidently prefer pastry, oranges, apples, and other fruit, to the flesh of animals, until, by the gradual depravation of the digestive organs, the free use of vegetables has, for a time, produced serious inconveniences; _for a time_, I say, since there never was an instance wherein a change from spirituous liquors and animal food to vegetables and pure water, has failed ultimately to invigorate the body, by rendering its juices bland and consentaneous, and to restore to the mind that cheerfulness and elasticity, which not one in fifty possesses on the present system. A love of strong liquors is also with difficulty taught to infants. Almost every one remembers the wry faces the first glass of port produced. Unsophisticated instinct is invariably unerring; but to decide on the fitness of animal food, from the perverted appetites which its constrained adoption produce, is to make the criminal a judge in his own cause; it is even worse, it is appealing to the infatuated drunkard in a question of the salubrity of brandy.