LE SIDÉROSTAT. Léon Foucault.
LE SIDÉROSTAT.

LE SIDÉROSTAT.

(Science).
  • (Paris, France: L'Académie des Sciences, 1869.
  • 4to.
  • unbound, edges uncut, in later portfolio
  • 6 pages

Price: $350.00  other currencies

Order Nr. 133625

Text in French. From the private library of Dr. Elliott and Eileen Hinkes. Extracted from Comptes rendus des séances de L'Académie des Sciences, LXIX, December 13, 1869. The siderostat is a revolving flat mirror designed to enhance telescopic viewing. Foxing. Unopened.