A dissertation on the properties and efficacy of the Lisbon diet-drink, [electronic resource] : in the cure of the venereal disease, the scurvy, And Other Disorders arising from an Impure State of the Blood; together with reflections on the use and abuse of mercury, and the Manner of its Action on the Solids and Fluids. To which is added, Such Remarkable Cases is have been successfully treated by a Course of the Diet-Drink. And also, A Supplement, wherein the true Difference between Venereal Symptoms, and those often mistaken for such by the Patient, &c. clearly pointed out; so as more easily to be distinguished from each other. By John Leake, M. D. Member of the Royal College of Physicians, London, and Physician to the Westminster Lying-in Hospital.