Sundials.- Oddi (Muzio) De gli Horologi Solari nelle Superficie Piane Trattato, FIRST EDITION, woodcut title vignette depicting a sundial, initials, several mathematical diagrams throughout, full page coat of arms of the dedicatee, Giacomo Teodoro Trivulzio, little spotting and marking, early unreadable ownership inscription on title, early library stamp ‘SNN’ to +2 and a, armorial bookplate of the Canon Lorenzo Maria Tettoni, contemporary limp vellum, title inked to spine, spotted, slightly rubbed and worm holed, [Riccardi, II, 211, ‘Raro’; Houzeau & Lancaster (1964 ed.), 11411; Enciclopedia Ital., v 25, p. 169; Michel & Michel, v. 6, p. 31; M. Moranti, Le Seicentine della Biblioteca Universitaria di Urbino, Baden-Baden 1997, n. 3509], Milan, Giacomo Lantoni, 1614; Risposta a i Dubbi di Raffaello Grimani da Orvieto d’intorno all’Hora Astronomica, e duodecima Italiana negli Horologi Orizontali, woodcut printer’s device on title page, initials and decorative tailpiece, astronomical illustration, minor spotting, little creasing to b, pages just shaved at foot, later paper wrappers, Perugia, Angelo Bartoli, 1637, 4to (2) ***Extremely rare pamphlet on sundials (only one existing copy, at Biblioteca Nazionale Braidense, Milan) by the Italian mathematician and gnomonist Muzio Oddi (1569-1639), written in response to Raffaello Grimani’s ‘Pratica facile, e breve di molte sorti di horologii solari’ (1635).