Mathematics Mydorge, Claude Examen du livre des Récréations mathématiques, et de ses problèmes en géométrie, méchanique, optique et catoptrique, où sont aussi discutées et restablies plusieurs expériences physiques y proposées. 3 vols. in 1 vol. With numerous woodcuts. Rouen, Osmont, 1643. 8 nn. Pl., 280 pp. 63 S. 2 nn. Bll., pp. 67-106, 22 nn. Pl. Cl.-8°. Pgt. d. Zt. (with larger defects and missing parts). Rare fourth edition. - Hoefer 37, 88; Thorndike VII, 593; cf. Poggendorf II, 249 (other editions). - From the library of the Königl. Kathol. Gymnasium Glogau, with the stamp "Bibliotheca Reg. Cath. Gymnas. Glogoviensis" on the title page. - Critical response to the collection of mathematical problems and physical experiments by the Jesuit Jean Lereuchon ("La Récréation mathématique ou Entretiens facétieux sur plusieurs plaisants problèmes en fait d'arithmétique, de géométrie") which was published in 1624 under the pseudonym H. van Etten. The French lawyer, mathematician, geometrician and physicist Claude Mydorge (1585-1647) was a friend of Descartes and worked with him. The work was a great success and went through several editions in the 17th century. In the third part, the author deals with fireworks. - Front endpapers with defects and contemporary hs. Annotations. First 8 vols. with small wormhole. Pp. 33-36 with tear and small loss. Last few leaves somewhat creased and dog-eared, 1 leaf with small holes. Somewhat browned and partially stained. Mathematics - 3 parts in 1 vol. With numerous woodcuts. Cont. vellum (with larger defects and missing parts). - Rare fourth edition. - From the library of the Royal Catholic Grammar School Glogau, with stamp "Bibliotheca Reg. Cath. Gymnas. Glogoviensis" on the title page. - Critical answer to the collection of mathematical problems and physical experiments by the Jesuit Jean Lereuchon ("La Récréation mathématique ou Entretiens facétieux sur plusieurs plaisants problèmes en fait d'arithmétique, de géométrie") which was published in 1624 under the pseudonym H. van Etten. The French jurist, mathematician, geometrician and physicist Claude Mydorge (1585-1647) was a friend of Descartes and worked with him. The work was a great success and went through several editions in the 17th century. In the third part, the author deals with fireworks. - Front endpapers with defects and contemporary handwritten annotations. First 8 fols. with small warmholes. pp. 33-36 with tear and small missing part. Last few pages somewhat creased and dog-eared, 1 p. with small holes. Somewhat browned and partly spotted.