MAYOW, John.

Hagae-Comitum [The Hague]: Apud Arnoldum Leers, .1681

12mo, 4 leaves, 416 pages, 12 leaves, and 6 engraved plates (plate 6 is double-page). Including the engraved portrait on *4 verso, and the final leaf of instructions to the binder. Title printed in red and black. Eighteenth century half mottled sheep, red morocco label on spine, corners worn. Some very minor foxing, but a good copy. Initials B.D.L. in gilt on spine.

FIRST EDITION of the Opera Omnia, which is a second edition of his classic Tractatus Quinque (1674), as it contains only that work, consisting of the following five tracts: De Sal-nitro, De Respiratione, De Respiratione Foetus in Utero et Ovo, De Motu Musculari, and De Rachitide. See G&M 578 (physiology) and 2726.2 (cardiology, confusingly giving the date of the first edition with a note to the second): “In the second edition of the Tractatus quinque Mayow recorded a case of mitral stenosis, probably the first description.” See also East, The story of heart disease, pp. 128–129 (giving the impression that the description is in the first edition). Duveen p. 397. Neville p. 158. Fulton, Two Oxford Physiologists, 109.

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