A popular history of astronomy during the nineteenth century (1902)
Clerke, Agnes M. (Agnes Mary), 1842-1907 · London, A. and C. Black · leaf 416
n at therate of twenty-nine miles a second; and the reality and direction ofthe movement were ratified by Vogel and Lohses observation,March 22, 1871, of a similar, but even more considerable displace-ment.4 The inquiry was resumed by Huggins with improvedapparatus in the following year, when the… … Photographs of Swifts Comet. By Professor E. E. Barnard. No. 1. Taken April 4. 1892 ; exposure 1 li. No. 2. Taken April 6, 1892 : exp< sure 1 h. 5 in chap, xii STARS AND NEBULjE 387 were approximately determined.1 The retreat of Sirius, whichproved slower than had at first been supposed, was now…
Astronomy
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