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| (30) [XIV]. Si ergo impossibile est aquam esse ecentricam, ut per primam figuram demonstratum est, et esse cum aliquo gibbo, ut per secundam est demonstratum; necesse est ipsam esse concentricam et coequam, hoc est equaliter in omni parte sue circumferentie distantem a centro mundi, ut de se patet. | (30) If, then, it is impossible for water to be excentric, as was shown by the first figure, and also that it should have a hump, as is shown by the second, it must necessarily be concentric [with earth], and also symmetrical, that is equally distant from the centre of the universe at every point of its circumference, as is obvious. |