[3] True, dear Polybius, (one might say,) this error [of Dicaearchus] is manifested by the proof which you yourself have given when you inform us that from the Peloponnesus to Leucas
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there are 700 stadia; from thence to Corcyra
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the same number; and the same number again from Corcyra to the Ceraunian Mountains;
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and from the Ceraunian Mountains to Iapygia,
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following the coast of Illyria on the right, 6150 stadia.
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But the statement of Dicaearchus, that the
distance from the Strait of Sicily to the Pillars is 7000 stadia, and also your view of the matter, are both of them equally incorrect. For almost every one is agreed that the distance measured straight across the sea is 12,000 stadia, and this coincides with the received calculation of the length of the inhabited earth, which is estimated at above 70,000 stadia; the western portion of this from the Gulf of Issus
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to the extreme western point of Iberia is little less than 30,000 stadia, and is thus calculated: from the Gulf of Issus to Rhodes 5000 stadia; from thence to Cape Salmonium,
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which forms the eastern extremity of Crete, 1000; the length of Crete to Criu-metopon
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above 2000; thence to Cape Pachynus
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in Sicily 4500, and from Pachynus to the Strait of Sicily above 1000 stadia; the run from the Strait to the Pillars 12,000 and lastly, from the Pillars to the extremity of the said promontory
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of Iberia, about 3000 stadia.
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