Helioscope.
Hooke, Robert, 1635-1703. No. 3 in **E.190.66 A description of helioscopes, and some other instruments made by Robert Hooke. London, printed by T. R. for John Martyn... 1676. (1), 32 pp. Plates. 21% cm., in 4s.
This card was printed at the Boston Public Library, April 18, 1922. M3962 — Helioscope. — Astronomical instruments.