7/55 Cicero's mention of the antipodes, and his reference to the passage in the Timaeus, are even more remarkable than the latter, in that they much more clearly foreshadow the modern doctrine. See his Academic Questions, ii; also Tusc.Quest., i and v, 24. For a very full summary of the views of the ancients on the sphericity of the earth, see Kretschmer, Die physische Erkunde im christlichen Mittelalter, Wien, 1889, pp. 35 et seq.; also Eiken, Geschichte der mittelalterlichen Weltanschauung, Stuttgart, 1887, Dritter Theil, chap.vi.For citations and summaries, see Whewell, Hist.Induct.Sciences, vol.i, p. |