...James Keeler, anobserver of the first rank, having the advantage of observing the planetfrom the summit of Mt...
E. Walter Maunder 「Are the Planets Inhabited?」
...I can only mention among the problems of the spectroscope the elegantand remarkable solution of the mystery surrounding the rings of Saturn,which has been effected by Keeler at Allegheny...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...In 1895 Professor Keeler, Director ofthe Allegheny Observatory, succeeded in measuring the rotation ofSaturn's ring in this manner...
Robert Stawell Ball 「The Story of the Heavens」
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