Dr. Andrew is a practitioner of medicine in Remsen, Oneida county, State of New York. His letter was intended for chapter iv., but came too late. This fact is the only apology for inserting it in this place. Several interesting cases of dietetic reform accompanied the letter, but I must omit them, for want of room, in this work. REMSEN, April 28, 1838. DEAR SIR--It is now about sixteen months since I adopted an exclusively vegetable diet. I have, however, never been very much inclined to animal food; and, indeed, before I ever heard of the Graham system I laid it aside, during summer, when farming--which, by the by, had always been my occupation till I commenced my professional course, about four years ago. I have, to the best of my knowledge, enjoyed what is commonly called good health, and possessed a degree of strength surpassed only by few; and in connection with the assiduous cultivation of my mental faculties, I have carefully sought to improve my physical powers, which I deem of incalculable worth to the student, as well as to the laborer. My attention was first called to the subject of vegetable eating by Professor Mussey, in a lecture before the medical class of the Western Medical College of New York, while fulfilling the duties of the professorship, to which he was called in 1836. In that lecture our adaptations, and the design of the Creator in regard to our mode of subsistence, were clearly held forth, and such was the impression made on my mind, that I was induced at once to adopt the vegetable system, both in practice and theory. In my change of diet I did not suffer any inconvenience. The fact that I had, for some length of time, been living mostly on vegetables, will account for that circumstance, however. But the great advantages derived from the change were soon perceptible, though not appreciated by others. I met with much opposition from my friends, frequently being told that I was fast losing my flesh and all my youthful vigor and vivacity. And yet, for one year and more, I have not lost a pound of flesh. I was gazed upon as an anomaly in society; some anxiously looking, and others fearfully expecting my downfall and destruction; but both are alike disappointed. The system, though I have not been able to follow it so strictly as I could wish, from the circumstances in which I have been placed, has far exceeded my expectations. One year and more has rolled away, and I thank God I can look back, with some degree of satisfaction, on the time spent in the enjoyment of that alone which sweetens the cup of life. My most able advocacy has been my manual exertions and I have demonstrated the utility of the _system_ alike to the professional and laboring classes of community.