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Published online by Cambridge University Press: 25 April 2016
The Plan of Selected Areas was suggested by the late Prof. J. C Kapteyn in 1906. The aim of the plan is to bring together, as far as possible, all the elements which seem most necessary for a successful attack on the problem of the structure of the sidereal world. The first, second and third reports on the progress of the plan were published by the Kapteyn Laboratory in 1909, 1910 and 1923 respectively, the fourth report appeared in Bulletin of the Astronomical Institutes of the Netherlands, No. 211, 1930. Many observatories and astronomers have co-operated on the plan and for the northern hemisphere most of the work has been finished or is now in progress.
page no 199 note * J. C. Kapteyn, , Plan of Selected Areas, 1906,Google Scholar
page no 200 note * Bulletin of the Astronomical Institutes of the Netherlands, No. 211, 1930
page no 200 note † J. C. Kapteyn, plan of seletced Areas,pp.64-66, 19996; Second impression pp. 64-66, 1923
page no 202 note * The Kapteyn-Pritchard areas are also observed. See Second Report Selected Areas, p. 21 footnote.
page no 202 note † Astronomische Nachrichten, 183, 297, 1910.
page no 203 note * Transactions of the International Astronomical Union, 1, 71, 1922.
page no 202 note † Transactions of the International Astronomical Union, 4, 143, 1932.
page no 206 note * See Nos. 14, 15, and 16 of the list of publications (section 13).
page no 209 note * Proceedings of the American Academy of Arts and Sciences, 59, 216, 1924; Harvard Reprint, 6.
page no 213 note * Oort, J. H.: The force exerted by the stellar system in the direction perpendicular to the galactic plane and some related problems, Bulletin of the Astronomical Institutes of the Netherlands, 6, 249, 1932 Google Scholar. Shapley, H.: A contribution to the study of galactic dimensions, Proceedings of the National Academy of Sciences, 19, 29, 1933 CrossRefGoogle Scholar. See also a paper by A. Schwassmann and myself forthcoming in one of the next numbers of Zeitschrift fiir Astrophysik.
page no 213 note † Space reddening in the galaxy from the colours of 733 B stars. Publications of the Washburn Observatory, 15, part 5, 1934.
page no 213 note ‡ Annual report of the director of the Mount Wilson Observatory, 1932-1933, 156, 1933.