[58] Vol. i. Sir John Pringle will furnish ample satisfaction to such of my readers as wish for more proofs of the efficacy of heavy rains, and cold weather, in checking the progress and violence of autumnal remitting fevers[59]. [59] P. 5, 56, 180, and 323. From the 15th of October the disease not only declined, but assumed more obvious inflammatory symptoms. It was, as in the beginning, more necessarily fatal where left to itself, but it yielded more certainly to art than it did a few weeks before. The duration of it was now more tedious than in the warmer weather. There were a few cases of yellow fever in November and December, after the citizens who had retired to the country returned to the city. I heard of but three persons who returned to the city being infected with the disease; so completely was its cause destroyed in the course of a few weeks. In consequence of a proclamation by the governor, and a recommendation by the clergy of Philadelphia, the 12th of December was observed as a day of thanksgiving throughout the state, for the extinction of the disease in the city. It was easy to distinguish, in walking the streets, the persons who had returned from the country to the city, from those who had remained in it during the prevalence of the fever. The former appeared ruddy and healthy, while the latter appeared of a pale or sallow colour. It afforded a subject of equal surprise and joy to behold the suddenness with which the city recovered its former habits of business. In the course of six weeks after the disease had ceased, nothing but fresh graves, and the black dresses of many of the citizens, afforded a public trace of the distress which had so lately prevailed in the city.