Morphological Astronomy
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THE Halley Lecture for 1948, with the above title, was delivered at Oxford on May 12 by Dr. F. Zwicky, of the California Institute of Technology, Pasadena. The lecture covers such a wide range in astronomy that only the more important points can be referred to in this short summary ; fuller information can be obtained from The Observatory (68, 845, August 1948), where it is printed in full.