Again, he says: "Animal food, in general, digests sooner than most kinds of vegetables; and not being so much in accordance with man's nature, constitution, and moral character, it is very liable, finally, to generate disease, inflammation, or fever, even when it is not taken to excess." He closes by advising all persons to content themselves with "pure vegetable food;" and that in the least quantity compatible with good health. DR. J. BURDELL, A distinguished dentist of New York, has long been a vegetable eater, and a zealous defender of the faith (in this particular) which he professes. DR. THOMAS SMETHURST, In a work entitled Hydrotherapia, says, "Children thrive best upon a simple, moderately nourishing vegetable diet." And if children thus thrive the best, why not adults? DR. SCHLEMMER. Dr. C. V. Schlemmer, a German by birth, but now an adopted son of old England, in giving an account of the diet of himself, his three sons of eleven, ten, and four years of age, with their tutor, observes: "Raw peas, beans, and fruit are our food: our teeth are our mills; the stomach is the kitchen." And all of them, as he affirms, enjoy the best of health. For himself, as he says, he has practiced in this way six years. DR. CURTIS, AND OTHERS. Dr. Curtis, a distinguished botanic physician of Ohio, with several other physicians, both of the old and the new school, whom I have not named, do not hesitate to regard a pure vegetable diet, in the abstract, as by far the best for all mankind, both in health and disease. Dr. Porter, of Waltham, for example, when I meet him, always concedes that a well-selected vegetable diet is superior to every other. He has repeatedly told me of an experiment he made, of three months, on mere bread and water. Never, says he, was I more vigorous in body and mind, than at the end of this experiment. But the reader well knows that I am not an advocate of a diet of mere bread and water. I regard fruits, or fruit juices--unfermented--almost as necessary, to adults, as bread. PROF. C. U. SHEPARD. The reputation of this gentleman, in the scientific world, is so well known, that no apology can be necessary for inserting his testimony. As a chemist, he is second to very few, if any, men in this country. The following are his remarks: "Start not back at the idea of subsisting upon the potato alone, ye who think it necessary to load your tables with all the dainty viands of the market--with fish, flesh, and fowl, seasoned with oil and spices, and eaten, perhaps, with wines;--start not back, I say, with disgust, until you are able to display in your own pampered persons a firmer muscle, a more beau-ideal outline, and a healthier red than the potato-fed peasantry of Ireland and Scotland once showed you, as you passed by their cabin doors!