II. I have but little to add to the remarks I made upon the use of purging in the year 1793. I gave jalap, calomel, and gamboge until I obtained large and dark-coloured stools; after which I kept the bowels gently open every day with castor oil, cremor tartar, or glauber's salts. I gave calomel in much larger quantities than I did the year before. John Madge took nearly 150 grains of it in six days. I should have thought this a large quantity, had I not since read that Dr. Chisholm gave 400 grains of it to one patient in the course of his fever, and 50 grains to another at a single dose, three times a day. I found strong mercurial purges to be extremely useful in the winter months, when the fever put on symptoms of pleurisy. I am not singular in ascribing much to the efficacy of purges in the bilious pleurisy. Dr. Desportes tells us that he found the pleurisy of St. Domingo, which was of the bilious kind, to end happily in proportion as the bowels were kept constantly open[121]. Nor am I singular in keeping my eye upon the original type of a disease, which only changes its symptoms with the weather or the season, and in treating it with the same remedies. Dr. Sydenham bled as freely in the diarrhœa of 1668 as he had done in the inflammatory fever of the preceding year[122]. How long the pleurisies of winter, in the city of Philadelphia, may continue to retain the bilious symptoms of autumn, which they have assumed for three years past, I know not; but the late Dr. Faysseaux, of South-Carolina, informed me, that for many years he had not seen a pleurisy in Charleston with the common inflammatory symptoms which characterised that disease when he was a student of medicine. They all now put on bilious symptoms, and require strong purges to cure them. The pleurisies which the late Dr. Chalmers supposes he cured by purging were probably nothing but bilious fevers, in which the cool weather had excited some pleuritic symptoms.

I have nothing to add to the remarks I have elsewhere published upon the efficacy of cool air and cold drinks in this fever. They were both equally pleasant and useful, and contributed, with cleanliness, very much to the success of my practice.

4. Cold water, applied to the external parts of the body, and injected into the bowels by way of glyster, did great service in many cases. John Madge found great relief from cloths dipped in cold water, and applied to the lower part of his belly. They eased a pain in his bowels, and procured a discharge of urine. A throbbing and most distressing pain in the head was relieved by the same remedy, in Mrs. Vogles and Mrs. Lenox. The cloths were applied for three successive days and nights to Mrs. Lenox's head, during an inflammation of her brain, which succeeded her fever, and were changed, during the greater part of the time, every ten or fifteen minutes. In 1795, I increased the coldness of pump water, when used in this way, by dissolving ice in it, and in some cases I applied powdered ice in a bladder to the head, with great advantage.

The following facts will show the good effects of cold water in this, as well as other fevers of too much action.

In the afternoon of one of those days in which my system was impregnated with the miasmata of the yellow fever, I felt so much indisposed that I deliberated whether I should go to bed or visit a patient about a mile in the country. The afternoon was cool and rainy. I recollected, at this time, a case related by Dr. Daignan, a French physician, of a man who was cured of the plague, by being forced to lie all night in an open field, in a shower of rain. I got into my chair, and exposed myself to the rain. It was extremely grateful to my feelings. In two hours I returned, when, to my great satisfaction, I found all my feverish symptoms had left me, nor had I the least return of them afterwards.

Dr. Caldwell, who acted as a surgeon of a regiment, in the expedition against the insurgents in the western counties of Pennsylvania, furnished me, in a letter dated from Bedford, October 20th, 1794, with an account of his having been cured of a fever, by a more copious use of the same remedy. “I was (says the doctor), to use a vulgar expression, wet to the skin, and had no opportunity of shifting my clothes for several hours. In consequence of this thorough bathing, and my subsequent exposure to a cool air, I was relieved from every symptom of indisposition in a few hours, and have enjoyed more than my usual stock of health ever since.”

The efficacy of cold water, in preventing and curing inflammation, may be conceived from its effects when used with mud or clay, for obviating the pain and inflammation which arise from the sting of venomous insects. The same remedy, applied for half an hour, has lately, it is said, been equally effectual in preventing the deleterious effects of the bite of a rattle-snake.

II. The good effects I had observed from a salivation in the yellow fever of 1793, induced me to excite it as early as possible, in all those cases which did not yield immediately to bleeding and purging. I was delighted with its effects in every case in which it took place. These effects were as follow: