Clocks.
Huygens, Christiaan, 1629-1605. #**E.190.73 Christiani Hvgenii . . . Horologivm oscillatorivm sive de motv pendvlorvm ad horologia aptato demonstrationes geometrice. Parisiis. Apud F. Muguet ... MDCLXXIII. (14), 161, (1) pp. Plate. Diagrams. Table. 32cm., in 4s.
This card was printed at the Boston ee Public Library, June 19 1074.
M8050 — Clocks. — Pendulum.