[Antonius Deusing. Extremely rare (Groningen?) printing] Epistolae dehortatoriae

ad Antonium Deusingium Medic. Profess. Celeberr, Editio tertia locupletior cum Apolline redivivo, Dabis improbe penas. No publisher, Lovanii [= Groningen], 1664, 40,8,49-68 p., with title woodcut (Mercury grabbin a satyr by the horns), modern gilt-lettered halfvellum, 12mo (minimal defects, untrimmed).

Extremely rare small edition, only a handful of copies traces worldwide (Erlangen-Nürnberg and Isaac Norris Collection, Dickinson College, Carlisle, Pennsylvania). No copies in PiCarta nor in Belgian libraries. Anton Deusing (1612-1666), physician, mathematician and astronomer, born in Moers (Germany) and active in Groningen from 1646 as the first professor of medicine at the university of that city. The present pamphlet is addressed to his opponent Sylvius in allegorical and often obscene phrases. The indication that this concerns the third printing is probably fictional, we were unable to trace any other editions. See Bayle & Thillaye, 1, p. 426-427.