The science of medicine is related to every thing, and the philosopher as well as the christian will be gratified by knowing the effects of a great and mortal epidemic upon the morals of a people. It was some alleviation of the distress produced by it, to observe its influence upon the obligations of morality and religion. It was remarked during this time, by many people, that the name of the Supreme Being was seldom profaned, either in the streets, or in the intercourse of the citizens with each other. But two robberies, and those of a trifling nature, occurred in nearly two months, although many hundred houses were exposed to plunder, every hour of the day and night. Many of the religious societies met two or three times a week, and some of them every evening, to implore the interposition of Heaven to save the city from desolation. Humanity and charity kept pace with devotion. The public have already seen accounts of their benevolent exercises in other publications. It was my lot to witness the uncommon activity of those virtues upon a smaller scale. I saw little to blame, but much to admire and praise in persons of different professions, both sexes, and of all colours. It would be foreign to the design of this work to draw from the obscurity which they sought, the many acts of humanity and charity, of fortitude, patience, and perseverance, which came under my notice. They will be made public and applauded elsewhere. But the virtues which were excited by our calamity were not confined to the city of Philadelphia. The United States wept for the distresses of their capital. In several of the states, and in many cities and villages, days of humiliation and prayer were set apart to supplicate the Father of Mercies in behalf of our afflicted city. Nor was this all. From nearly every state in the union the most liberal contributions of money, provisions, and fuel were poured in for the relief and support of such as had been reduced to want by the suspension of business, as well as by sickness and the death of friends. The number of deaths between the 1st of August and the 9th of November amounted to four thousand and forty-four. I shall here insert a register of the number which occurred on each day, beginning on the 1st of August, and ending on the 9th of November. By comparing it with the register of the weather it will show the influence of the latter on the disease. Several of the deaths in August were from other acute diseases, and a few in the succeeding months were from such as were of a chronic nature.