Daffy's original elixir salutis, vindicated against all counterfeits, &c. or, An advertisement by mee, Anthony Daffy, of London, citizen and student in physick [electronic resource] : by way of vindication of my famous and generally approved cordial drink, (called elixir salutis) from the notoriously false suggestions of one Tho. Witherden of Bear-steed in the county of Kent, Gent. (as pretended), Jane White, Robert Brooke, apothecary, and Edward Willet ..