Ball, R[obert] S[tawell], Sir, 1840- [from old catalog] · New York, H. Holt and company · leaf 135
case, day and night are of equal length all over theglobe. We thus see that by the revolution of theearth about the sun, combined with the rotation ofthe earth about its axis and the constant inclinationof the earths axis to the plane of the ecliptic, thechanges of the seasons are produced. CHAPTER…
Astronomy
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