Galilei (Galileo) Opere...,2 vol., first edition, edited by Carlo Manolessi, half-titles, engraved frontispiece depicting Galileo pointing to a celestial heliocentric system, engraved portrait by F. Villamena, folding engraved plate, numerous woodcut illustrations, diagrams, decorations and initials, 1 f. water-stained at lower margin, 19th century half calf, [Houzeau & Lancaster 3386; Riccardi I 518], 4to, Bologna, Evangelista Dozza' heirs, 1655-56.

***First and rare edition of Galileo's collected works, edited by Carlo Manolessi and dedicated to Grand Duke Ferdinand II. According to Riccardi it contains a number of pieces here published for the first time. Most of these are letters to various friends and opponents, discussing questions raised by his published works. Both The Dialogo and Letter to Christiana are listed on the index 'librorum prohibitorum'..