The author of _The Art of Improving Health_, has also a passage in point: "An animal diet, especially in temperate climates, is more wasting than a vegetable; because it excites by its stimulating qualities a fever after every meal, by which the springs of life are urged into constant and weakening exertions: on the contrary, a vegetable diet tends to preserve a delicacy of feeling, a liveliness of imagination, and an acuteness of judgment, seldom enjoyed by those who live principally on meat." Thus we might go on multiplying authorities on this subject, but we shall content ourselves with referring briefly to one or two authors of a more literary stamp, and have done with quotation. The eloquent Shelley, in his notes to _Queen Mab_, pretty roundly assures us, that "according to comparative anatomy, man resembles frugivorous animals in everything, carnivorous in nothing;" and the famous author of the _Anatomy of Melancholy_, has quaintly but nervously observed, "As a lamp is choked with over much oil, or a fire with too much wood, so is the natural heat strangled in the body by the superfluous use of flesh; thus men wilfully pervert the good temperature of their bodies, stifle their wits, strangle nature, and degenerate into beasts." The somewhat visionary but fascinating Rousseau, has also in his _Treatise of Education_, to which we refer our readers, most powerfully condemned the use of flesh, and he humorously attributes the proverbial boorishness of Englishmen to their fondness for roast beef!