To render the foregoing position intelligible to our readers, it is necessary to premise, that the action of all active medicines depends upon the principle (admitted by all physiologists), that nature ever makes a continued effort to cure herself, never ceasing in her attempts to relieve the body from whatever injurious matter may be present in it. It is this effort of nature to expel the irritant matter from the system, which makes the drug produce its effect. Thus when a preparation of sulphur is administered as a medicine, nature, in her effort to get rid of the sulphur, opens her pores to expel it. This is proved by the resulting perspiration, and by the circumstance that everything in contact with the patient is found, on analysis, to be largely impregnated with the constituents of the medicine;—the well-known fact of all articles of silver about the person, being tarnished, being an illustration of this effect;—in addition to this the stomach is weakened and irritated by the medicine which has been poured into it; and further, if the dose is repeated, nature, getting gradually accustomed to the intruder, ceases from her inhospitable exertion to expel it, and, as a consequence, the medicine fails in producing its intended effect. We have here referred to the successful administration of a drug, but in many instances it entirely fails to produce the desired result, acting injuriously upon other organs of the system, quite contrary to the effect intended. We will now compare this treatment with the hydropathic mode of producing the effects aimed at by sudorifics. Instead of injuring the stomach by pouring deleterious drugs into it, the Hydropathist applies himself; at once, to the great organ he seeks to act on, viz., the skin; his usual appliances consisting of the lamp and Turkish baths, and the result is this, that by his method a most powerful effect is produced on the skin in the course of about half an hour, after which the patient feels lightened, strengthened, and invigorated, no deleterious substances are passed into the stomach to irritate its membranes, producing nausea and other disagreeable results, and the process may be repeated as often as may be necessary with undiminished effect. Who ever saw a patient recovering from the perspiratory process under the orthodox allopathic mode of treatment, that was not weakened and dejected by it, whilst buoyancy of spirits and invigoration of the system, are the usual accompaniments of the hydropathic process. Take another example from the process of wet-sheet packing, and examine its effects in subduing inflammatory and febrile affections. By this simple process the pulse is often reduced from 120 pulsations per minute to sixty-five, in the short period of three-quarters of an hour, the circulation equalized throughout the body, and a soothing effect produced on the patient, which language fails to describe—a result which no drug or combination