Serviss, Garrett Putman, 1851- [from old catalog] · New York, London, D. Appleton and company · leaf 19
s revolution, it is clear, must be atthe rate of 30° in a month, since the complete circuit com-prises 360°. But, in addition to the annual revolution, thereis a diurnal revolution of the heavens which is caused by theearths daily rotation upon its axis, and this revolution must,for a similar… … extent as in one month of the annual revolution. It followsalso that, if one could watch the heavens throughout thewhole twenty-four hours, and not be interrupted by daylight,he would behold the complete circuit of the stars just as hewould do if, for a year, he should look at the heavens at…
Astronomy
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