Circle.
Huygens, Christiaan, 1629-1695. **E5129.111 Christiani Hugenii, Const. F. De circuli magnitudine inventa. Accedynt eivsdem problematum quorundam illustrium con- structiones. Lygdvni Batavorvm, Apud Johannem & Danielem Elzevier.
CI9 IDC 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.
‘ ees) fs “ This card was printed at the Boston Public Library February 28, 1936.
Dos502 — Circle. — Elzevirs. — Geometry.