And to be Assistant to so great a Work, the Neglect of which the Lives of the Nation being at stake, we have some the most eminent of the Physicians now in Vogue, who from that Duty to their Profession, and their Zeal to the Publick Good, have publish'd some Essays, not only of the Nature, Cause, Symptoms, Prognosticks, and Affections of this fatal Distemper; but likewise of the proper Means to be used in preventing, and fortifying against, with the proper Applications of recovering those that are seiz'd by this fatal Enemy to Mankind. Books of this kind lately published are, a short Discourse concerning Pestilential Contagion, by Dr. _Mead_. The Plague of _Marseilles_ consider'd by Dr. _Bradley_. Dr. _Hodges_'s Loimologia of the Plague in _London_, _Anno_ 1665; reprinted by Dr. _Quincy_: To which is added, an Essay of his own, with Remarks of the Infection now in _France_. To those worthy Gentlemen are we indebted for their ready Help, to their philosophical Enquiries, their learned and analytical Explanations in all the Stages of this raging Ill; and farther, by what physical Power it corrupts the Blood, destroys the Spirits, and is follow'd by Death at the last. The Apologies that are made in their Preface, _viz._ of a short Warning, of their little Leisure, the Uncorrectness of Style, and the Typographical Errors should be favourably construed from so great an Aim of doing the Publick so great a Good; and it would be esteemed a base Ingratitude, meerly for the sake of Contradiction, to quarrel with the Hand that directs, and may support us in the greatest Extremity. But where there may be a sufficient Reason to undeceive, or amend such Errors, as might otherwise be prejudicial to their intended Purpose of preserving the Common Weal, or advancing some other necessary Instructions which they have omitted; I can't but perswade myself that I shall have their Approbation, if not their Thanks in prosecuting the Advancement of that good End they so greatly have desired in their Publications.