The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 122
PLATE XV. The Intra-Mercurial Cameras and the Moving-PlateSpectrograph, Flint Island. A Total Eclipse of the Sux 71 adjustments which make the difference between good andexcellent results and the rehearsal. The duration of totality was 3™ 52^; to utilize those preciousseconds to the utmost, it was…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
