In reference to our reformed system of veterinary medication, it will be sufficient, in the present place, just to glance at the fundamental principles. In the succeeding pages these principles will be more fully explained. We contemplate the animal system as a complicated piece of mechanism, subject to the uncompromising and immutable laws of nature, as they are written upon the face of animate nature by the finger of Omnipotence. All our intentions of cure being in accordance with nature's laws, (viz., promoting the integrity of the living powers,) we have termed our system a _physiological_ one, though it is sometimes termed _botanic_, in allusion to the fact that most of our remedial agents are derived from the vegetable kingdom. We recognize a conservative or healing power in the animal economy, whose unerring indications we endeavor to follow; considering nature the physician, and the doctor her servant. Our system proposes, under all circumstances, to restore the diseased organs to a healthy state, by coöperating with the vitality remaining in those organs, by the exhibition of sanative means, and, under all circumstances, to assist, and not oppose, nature in her curative processes. Poisonous substances, blood-letting, or processes of cure that act pathologically, cannot be used by us. The laws of animal life are physiological: they never were, nor ever will be, pathological. The agents we use are just as we find them in the forest and the field, compounded by the Great Physician. Hence the reader will perceive that our aim is to depart from the popular debilitating and life-destroying practice, and approach as near as possible to the sanative. G. H. D. THE AMERICAN REFORMED CATTLE DOCTOR. IMPORTANCE OF SUPPLYING CATTLE WITH PURE WATER.