Abstract
I HAVE been greatly interested in Mr. Eddington's account in NATURE of July 11 (p. 248) of Prof. J. C. Kapteyn's investigations of this subject. Although I do not quite follow his argument for the existence of two overlapping systems of stars (more dramatically termed “two Universes” by Prof. Turner), I yet venture to suggest an explanation of the apparently (perhaps really) opposite “drifts,” which seems to me to agree sufficiently with the observed facts.
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WALLACE, A. The “Double Drift” Theory of Star Motions. Nature 76, 293 (1907). https://doi.org/10.1038/076293b0
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DOI: https://doi.org/10.1038/076293b0


