The generation of the yellow fever in our city was rendered more certain by the prevalence of bilious diseases in every part of the United States, and, in several of them, in the grade of yellow fever. It was common in Charleston, in South-Carolina, where it carried off many people, and where no suspicion was entertained of its being of West-India origin. It prevailed with great mortality at that part of the city of Baltimore, which is known by the name of Fell's Point, where, Dr. Drysdale assures me, it was evidently generated. A few sporadic cases of it occurred in New-York, which were produced by the morbid exhalation from the docks of that city. Sporadic cases of it occurred likewise in most of the states, in which the proofs of its being generated were obvious to common observation; and where the symptoms of depressed pulse, yellowness of the skin, and black discharges from the bowels and stomach (symptoms which mark the highest grade of bilious remitting fever) did not occur, the fevers in all their form of tertian, quotidian, colic, and dysentery, were uncommonly obstinate or fatal in every state in the union. In New-Haven only, where the yellow fever was epidemic, it was said to have been imported from Martinique, but this opinion was proved to be erroneous by unanswerable documents, published afterwards in the Medical Repository, by Dr. Elisha Smith, of New-York. The year 1795 furnished several melancholy proofs of the American origin of the yellow fever. All the physicians and citizens of New-York and Norfolk agree in its having been generated in their respective cities that year. It prevailed with great mortality at the same time in the neighbourhood of the lakes, and on the waters of the Genesee river, in the state of New-York. From its situation it obtained the name of the lake and Genesee fever. It was so general, in some parts of that new country, as to affect horses. Thus have I endeavoured to fix the predisposing and remote causes of the yellow fever in our country. The remote cause is sometimes so powerful as to become an exciting cause of the disease, but in general both the predisposing and remote causes are harmless in the system, until they are roused into action by some exciting cause. I shall conclude this account of the symptoms and origin of the yellow fever by relating two facts, which serious and contemplating minds will apply to a more interesting subject.