Note 3 — Chapter X

In the second book, however, the measurements given by Strabo are more consistent; for he tells us that the circumference of the Greater Syrtis is (according to Eratosthenes) five thousand stadia, or 428⁴⁵⁄₁₀₀ geographic mile[a]; and its depth, from the Hesperides to Automala, and the limits of the Cyrenaica, one thousand eight hundred, or 154²⁹⁄₁₀₀ geographic miles. Others, he adds, make the circumference four thousand stadia, 342⁸⁸⁄₁₀₀ geographic miles; and the depth one thousand five hundred stadia, or 128⁵⁷⁄₁₀₀ geographic miles; the same, he says, as the breadth of the gulf at its mouth.—Lib. xi. p. 123.