PART SECOND.
Of the Yellow Fever.
We now come to treat of a disease, less fatal indeed than the Asiatic plague, but yet so deadly in its nature in the Western World, that it has of late been confounded with the former, and attempts made to prove that they are both to be considered only as degrees of the same disease, and that both have been recorded by historians indiscriminately under the common appellation ofplagueor pestilence. To investigate this matter candidly, and to show that there is a real and essential difference between the two, as far as we can credit testimonies drawn from the most respectable writers, shall be the work of the following part of this treatise.