Dr. Whitlaw is the author of a work entitled "New Medical Discoveries," in two volumes, and of a "Treatise on Fever." He has also established medical vapor baths in London, New York, and elsewhere; and is a gentleman of much skill and eminence in his profession. Dr. Whitlaw says-- "All philosophers have given their testimony in favor of vegetable food, from Pythagoras to Franklin. Its beneficial influence on the powers of the mind has been experienced by all sedentary and literary men. "But, that which ought to convince every one of the salubrity of a diet consisting of vegetables, is the consideration of the dreadful effects of totally abstaining from it, unless it be for a very short time; accounts of which we meet with, fully and faithfully recorded, in the most interesting and most authentic narratives of human affairs--wars, sieges of places, long encampments, distant voyages, the peopling of uncultivated and maritime countries, remarkable pestilences, and the lives of illustrious men. To this cause the memorable plague at Athens was attributed; and indeed all the other plagues and epidemical distempers, of which we have any faithful accounts, will be found to have originated in a deprivation of vegetable food. "The only objections I have ever heard urged (the only plausible ones, he must mean, I think), is the notion of its inadequacy to the sustenance of the body. But this is merely a strong prejudice into which the generality of mankind have fallen, owing to their ignorance of the laws of life and health. Agility and constant vigor of body are the effect of health, which is much better preserved by a herbaceous, aqueous, and sparing tender diet, than by one which is fleshy, vinous, unctuous, and hard of digestion. "So fully were the Romans, at one time, persuaded of the superior goodness of vegetable diet, that, besides the private example of many of their great men, they established laws respecting food, among which were the _lex fannia_, and the _lex licinia_, which allowed but very little animal food; and, for a period of five hundred years, diseases were banished along with the physician from the Roman empire. Nor has our own age been destitute of examples of men, brave from the vigor both of their bodies and their minds, who at the same time have been drinkers of water and eaters of vegetables.[12] "Nothing is more certain than that animal food is inimical to health. This is evident from its stimulating qualities producing, as it were, a temporary fever after every meal; and not only so, but from its corruptible qualities it gives rise to many fatal diseases; and those who indulge in its use seldom arrive at an advanced age.