Thompson's single authority for this address is a footnote — Frazer on Apollodorus I 4 — and our shelf can now walk that bridge at both ends. On the wired page Apollodorus gives the geometry without the clock: Sky casts the Cyclopes into Tartarus, a gloomy place "as far distant from earth as earth is distant from the sky" [The Library (Bibliotheca), BOOK I, ch. I]. Frazer's note supplies the arithmetic from Hesiod: "a brazen anvil would take nine days and nights to fall from heaven to earth" [ibid., editor's note]. And the Theogony itself is served, with the measure verbatim: a brazen anvil "falling down from heaven nine nights and days would reach the earth upon the tenth", and again "falling from earth nine nights and days would reach Tartarus upon the tenth" [Hesiod, the Homeric Hymns, and Homerica, THE THEOGONY]. Two notations of one interval: Apollodorus states the symmetry as distance, Hesiod as falling-time — the cosmos surveyed by dropping an anvil. Small print for the auditor: the served count is nine nights and days, arriving on the tenth, and the lower terminus is Tartarus with its fence of bronze — "hell" is the index's word, not the text's.