Your PDF has successfully downloaded.
You may be interested in finding more content on these topics:
You are not currently logged in.
Access JSTOR through your library or other institution:
S. D. T., R. T. Crawford and W. W. Campbell
Publications of the Astronomical Society of the Pacific
Vol. 22, No. 133 (October, 1910), pp. 192-201
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40691731
Page Count: 10