Huygens, Christiaan, 1629-1695. **FE5129.111 Christiani Hugenii, Const. F. De circuli magnitudine inventa.
Accedynt eivsdem problematum quorundam illustrium con- structiones. Lvgdvni Batavorvm, Apud Johannem & Danielem Elzevier. CI9 INC LIV. (8), 71, (1) pp. Diagrams. Printer’s device. 20 cm., in 4s. Device: a hermit, with motto, “Non solus.” See Willems, 746; Stockholm, 618.
$ c OY This card was printed at the Boston Public Library February 28, 1936.
Do502 — Circle. — Elzevirs. — Geometry.