...—A line drawn from the star γ Pegasi to Algol in Perseuspasses through β Trianguli... 
William Tyler Olcott 「A Field Book of the Stars」
...It is at one apex of thepentagon, about 15° east of Al Rischa in Pisces, and 37° directlysouth of Algol...
William Tyler Olcott 「A Field Book of the Stars」
...Stars of this class are all very remote, and noattempt has as yet been made to ascertain the parallax of Algol...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...Assuming the orbit to be circular,the velocity of Algol was found to be twenty-six miles per second...
Robert Stawell Ball 「The Story of the Heavens」
...: Great Copernican Myth; a Review of Algol by dePeyster and Allaben...
Dorothy Stimson 「The gradual acceptance of the Copernican theory of the universe」
...The star is a remarkable variable, belonging to whatis called the Algol type...
Garrett Serviss 「Pleasures of the telescope」
...Certain stars,called Algol stars, vary in light at regular intervals when partiallyeclipsed by the interposition of a large dark satellite...
Edward C. Pickering 「The Future of Astronomy」
...We are already acquainted with the variations of Algol, in Perseus, dueto its partial eclipse by a dark globe gravitating in the line of ourvision...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...It was bysupposing the existence of a dark companion to Algol that its discoverer,Goodricke of York, in 1783, explained variable starsof this type...
George Forbes 「History of Astronomy」
...There are many variables of the Algol type, and information issteadily accumulating...
George Forbes 「History of Astronomy」
...Note the famousvariable Algol the Demon star...
William Tyler Olcott 「A Field Book of the Stars」
...Note a dull red star near Algol, and a pretty pair just above Algenib...
William Tyler Olcott 「A Field Book of the Stars」
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