Publisher's Synopsis
Excerpt from The Proper Motions of 1418 Stars in and Near the Clusters H and X Persei
It would have been impossible to accomplish this task without the help of several astronomers who all assisted me in the kindest way. I wish to express my sincere thanks to: Professor anders donner of Helsingfors and Dr. S. Kostinsky of Pulkovo for the great number of plates, taken with the greatest possible interval, which they put at my disposal.
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