William Salmon (1644–1713) was an English empiric doctor and a writer of medical texts. He advertised himself as a "Professor of Physick". Salmon held an equivocal place in the medical community. He led apothecaries in opposing attempts by physicians to control the dispensing of medicines, and was derided by physicians as "the King of the Quacks". He has been described as "a brilliant publicist, but not much of a philosopher". Salmon "copied, translated, abridged, enlarged and compiled from the texts of others" to create popular books emphasizing practice over theory, and often marketing his own medications. A prolific author on a broad range of medical topics, Salmon's works were widely read in his time. His books were owned by respected men including Isaac Newton, Daniel Defoe, William Congreve and Samuel Johnson. Life According to an inscription under his portrait in Ars Anatomica (1714), William Salmon was born on 2 June 1644. Almost nothing is known about his upbringing or his education. He may have travelled in New England or the West Indies. It was rumoured that his earliest teacher was a travelling charlatan from whom he inherited his original stock-in-trade. Salmon set up in business near the Smithfield gate of St. Bartholomew's Hospital in London, where he could attract patients who did not receive treatment at the hospital. He treated diseases, compounded and sold prescriptions, cast horoscopes, and studied alchemy, all "form[s] of medical practice common at the time". By 1681 he had moved to the Red Balls in Salisbury Court off Fleet Street. He then lived briefly in George Yard, near Broken Wharf. In 1684, Salmon moved to the Blue Balcony by the ditch side, near Holborn Bridge, living there until 1692. By 1698, when he published Ars chirurgica, he indicated that his residence was the Great House by Black Friars' Stairs. William Salmon fills his medical works with observations about cases, but the extent to which he draws on other authors makes it difficult to characterize his personal practice. Nonetheless, from the focus of his books, it is clear that he emphasized Medicina practica, or, Practical physick. He recommended herbal preparations such as the "spirituous tincture" of dried lavender to cure "hysterick fits" and as a poultice for bites. His descriptions of senile dementia suggest careful observation: he described a patient as "not mad, or distracted like a man in Bedlam", but rather "decayed in his wits". He