Of the auxiliary aids, consisting of various external applications, we cannot speak in very flattering terms. To the mind of the practitioner the more important are readily suggested, and are promptly employed by nurses in the earlier stages of the disease. It is impossible for any person to attend on a case of true cholera without being instinctively moved to apply heat friction, and warm stimulants to the surface for the relief of the suffering patient. Any attempt to prevent these kind offices and apparently beneficial appliances would be unwise, and most certainly, in private practice, unavailing. It becomes, therefore, necessary to direct the use of those which are most agreeable to the patient and tend to preserve and sustain the recuperative power; those which tend to weaken and depress the system are the most objectionable. Among the number that seem to do good, we may mention bottles of hot water to the feet and calves of the legs, hot bricks dipped in water and wrapped in flannel and applied to different parts of the body; blankets wet in water as hot as can be borne, and wrung out so as not to drip, and applied to the whole surface, and changed at short intervals, so as to keep up a steady and permanent temperature of the surface; flannels moistened with spirits of turpentine, or other stimulant embrocation, and laid over the stomach and bowels, may be employed, as these all, in some instances, seemed to be beneficial. Their necessity and use, however, must be governed by circumstances. As we have before said, our main reliance is on a prompt and diffusive stimulant internally; other means, at best, are very uncertain. Such are some of the remedies evidently suggested by the pathology and phenomena of the disease, and adapted to meet and remove the more urgent, essential symptoms. They are not entirely new. They have been employed to some extent in former epidemics of cholera, and have sustained a good reputation as useful and curative agents in the treatment of this disease. The combinations here suggested are the result of observation and experience, and are intended to present the form in which these remedies can be exhibited to the best advantage. They are simple, prompt, and reliable, such as will leave the system, when the disease is subdued, in its ordinary condition, without any injury whatever to prevent its immediate return to its normal state of health. Let them be employed, and their utility thoroughly tested. They will bear the strictest scrutiny, and sustain their reputation untarnished under the most trying circumstances. Should the cholera appear again in our midst in its epidemic form, and these remedies be generally employed and properly administered, we venture to predict their efficacy will be abundantly proved in the successful result of saving more than nine-tenths of those attacked. SECTION III.--PROPHYLAXIS--OR MEANS OF PREVENTION.