Kitap 2
5.2
The earth and heavens are spheroidal. The tendency of all bodies having weight, is to a centre. Further, the earth being spheroidal, and having the same centre as the heavens, is motionless, as well as the axis which passes through both it and the heavens. The heavens turn round both the earth and its axis, from east to west. The fixed stars turn round with it, at the same rate as the whole.We have followed the suggestion of Gosselin in reading τῷὅλῳthe whole, instead of τῷ πόλῳ,the pole, as in the text. Strabo having just previously stated that the axis of the earth was stationary, it does not seem probable that he would immediately after speak of the motion of the pole. These fixed stars follow in their course parallel circles; the principal of which are, the equator, the two tropics, and the arctic circles. While the planets, the sun, and the moon, describe certain oblique circles comprehended within the zodiac. Admitting these points in whole or in part, astronomers proceed to treat of other matters, [such as] the motions [of the stars], their revolutions, eclipses, size, relative distance, and a thousand similar particulars. On their side, geometers, when measuring the size of the entire earth, avail themselves of the data furnished by the natural philosopher and astronomer; and the geographer on his part makes use of those of the geometer.
