Besides the different Conditions of [1] Persons, to whom our Author recommends the Patronage and Execution of his Scheme, in his Introduction, it is conceived this Book must be serviceable to many young Country Practitioners, and to great Numbers of Apothecaries, by furnishing them with such exact and striking Descriptions of each acute Disease and its Symptoms, as may prevent their mistaking it for any other; a Deception which has certainly often been injurious, and sometimes even fatal: for it is dreadful but to contemplate the Destruction or Misery, with which Temerity and Ignorance, so frequently combined, overwhelm the Sick. Thus more Success and Reputation, with the Enjoyment of a better Conscience, would crown their Endeavours, by a more general Recovery of, or Relief to, their Patients. To effect this, to improve every Opportunity of eschewing medical Evil, and of doing medical Good, was the Author's avowed Intention; which he informs us in his Preface, he has heard, from some intelligent and charitable Persons, his Treatise had effected, even in some violent Diseases. That the same good Consequences may every where attend the numerous Translations of it, must be the fervent Wish of all, except the Quacks and Impostors he so justly characterizes in his thirty-third Chapter! and particularly of all, who may be distinguishably qualified, like himself, to, --_Look through Nature up to Nature's GOD!_ [1] Of all these the Schoolmasters, _with us_, may seem the most reasonably exempted from this Duty. The AUTHOR's _DEDICATION._ _To the most Illustrious, the most Noble and Magnificent Lords, the Lords President and Counsellors of the Chamber of Health, of the City and Republick of_ Berne. _Most honourable Lords_, When I first published the following Work, my utmost Partiality to it was not sufficient to allow me the Confidence of addressing it to Your Lordships. But Your continual Attention to all the Objects, which have any Relation to that important Part of the Administration of the State, which has been so wisely committed to Your Care, has induced You to take Notice of it. You have been pleased to judge it might prove useful, and that an Attempt must be laudable, which tends to the Extermination of erroneous and inveterate Prejudices, those cruel Tyrants, that are continually opposing the Happiness of the People, even under that Form and Constitution of Government, which is the best adapted to establish and to increase it.