length of the first edition. In 1671 Salmon published Synopsis Medicinæ, or a Compendium of Astrological, Galenical, and Chymical Physick, in three books. Although he dedicated the volumes to Dr. Peter Salmon and Thomas Salmon of Hackney, there is no evidence to indicate that they were in any way related. The work also included laudatory verses by Henry Coley and others. The publisher of Synopsis Medicinæ was Richard Jones of the Golden Lion in Little Britain. A second edition appeared in 1681, a reissue in 1685, and a fourth edition in 1699. In 1672 the same publisher, Richard Jones, brought out Salmon's Polygraphice, the Art of Drawing, Engraving, Etching, Limning, Painting, Washing, Varnishing, Colouring, and Dyeing. The first edition was dedicated to Peter Stanley of Alderley. Like Salmon's medical books, it emphasized techniques, meeting "a thirst for practical production skills". In subsequent editions, lavish illustrations were added and the range of topics was extended to include cosmetics, chiromancy, alchemy, hermetic philosophy, and medicine. Considerable scientific information was included, e.g. fifty experiments published by Robert Boyle in his Experiments touching colour. Polygraphice was probably Salmon's most successful book. It went through eight editions and sold 15,000 copies by 1701, and held sustained popularity as an art manual. It was one of the earliest and most successful "printed academies", with wide geographical impact. Such works supported the transfer or visual knowledge and helped to create a broad taste for art. Expanding far beyond their initially intended audience of amateur and profession artists and craftsmen, they found a dominant audience among middle and upper-class women. In 1678, publisher Thomas Dawks released the first edition of Salmon's Pharmacopœia Londinensis. Or, the New London Dispensatory. In six volumes, it purported to cover "the whole Art of Healing", giving practical advice "translated into English for the publick Good". In 1679 Dawks released Salmon's Horæ Mathematicæ seu Urania – The Soul of Astrology. Dawks also reissued Sytema Medicinale (1681) and published Salmon's Iatrica, seu, Praxis medendi, The practice of curing being a medicinal history of above three thousand famous observations in the cure of diseases (1681, reissued 1684). In 1683, Dawks published Doron Medicon: Or a supplement to the New London Dispensatory. In 1684, Salmon published the first in a series of prophetic almanacs which appeared regularly between 1691 and 1706. Among other materials, his London Almanack featured an ailment of the month with suggested "physical recipes"