PREFACE.
they come. I hope the world will not receive this work with leſs candor, becauſe I don't give them a recipe of the remedy here recommended, which I do not know my ſelf; and which in all right reaſon ought to be the property of the Inventor.
I ſaw no occaſion to alter any thing in the letter which I publiſhed laſt year. Becauſe there were but very few copies of it printed; as it is a neceſſary part of this diſcourse, I reprinted it, that they may be bound together. And if I ſhould hereafter trouble the world upon this argument again, from longer experience, I hope it will not be without emolument. My ſole purpoſe in the affair is to benefit mankind, if I am able. I have before now refus'd the honers and profits of the profeſſion of phyſick, and don't ſeek them at this time. And reputation
