CAVALIERI (BONAVENTURA): EXERCITATIONES GEOMETRICAE SEX, Bologna, typis Iacobi Montii, 1647, 4to, first edition, with half title, title vignette, woodcut geometrical diagrams and illustration of a water-well (occasional browning), 19th-century half morocco. [Riccardi I, 329; Brunet I, 1697: 'ouvrage très-recommandable'; Sotheran I, 734: 'containing the earliest demonstration of the theorems of Pappus, and the first determination of focal distances of glass lenses'; Honeyman 649]