Chap. 113.—The Harmonical Proportion of the Universe

That harmonical proportion, which compels nature to be always consistent with itself, obliges us to add to the above measure, 12,000 stadia; and this makes the earth one ninety-sixth part of the whole universe.

Summary.—The facts, statements, and observations contained in this Book amount in number to 417.

Roman authors quoted.—M. Varro, Sulpicius Gallus, Titus Cæsar the Emperor, Q. Tubero, Tullius Tiro, L. Piso, T. Livius, Cornelius Nepos, Sebosus, Cælius Antipater, Fabianus, Antias, Mucianus, Cæcina, who wrote on the Etruscan discipline, Tarquitius, who did the same, Julius Aquila, who also did the same, and Sergius.

Foreign authors quoted.—Plato, Hipparchus, Timæus, Sosigenes, Petosiris, Necepsos, the Pythagorean Philosophers, Posidonius, Anaximander, Epigenes the philosopher who wrote on Gnomonics, Euclid, Cœranus the philosopher, Eudoxus, Democritus, Critodemus, Thrasyllus, Serapion, Dicæarchus, Archimedes, Onesicritus, Eratosthenes, Pytheas, Herodotus, Aristotle, Ctesias, Artemidorus of Ephesus, Isidorus of Charax, and Theopompus.