, the Swan, a constellation of the northern hemisphere, being one of the 48 old ones, and fabled by the Greeks to be the swan, under the form of which Jupiter deceived Leda or Nemesis, from which embrace sprung the beauteous Helen.
The stars in the constellation Cygnus, in Ptolomy's catalogue are 19, in Tycho's 18, in Hevelius's 47, and in the Britannic catalogue 81.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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