The twentieth edition, revised, of an essay, on the nature and cure of scrophulous disorders, commonly called the King's Evil; deduced from long obervation and practice. With additions. And above sixty cases; the remedies in them used, and occasional remarks. To which is prefixed, a coloured plate of the Herb Vervain, and its root. Published for the good of mankind; particularly the common people. By John Morley, Esq. of Halstead, in Essex.