A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 267
262 THE STARS. … of the Southern Crossconsists in part of coloredstars; and another in thesouthern hemisphere iscomposed entirely of bluestars. The one situatedbetween Eta and Zeta inthe constellation Hercu-les is a peculiarly mag-nificent object in ournorthern heavens on finenights, and is visible tothe naked eye…
Astronomy
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