Note 1392 — PERSIUS.

Nigrum Theta. The Θ, the first letter of θάνατος, was set by the Judices against the names of those whom they adjuged worthy of death, and was hence used by critics to obelize passages they condemned or disapproved of; the contrary being marked with Χ, for χρηστόν. Cf. Mart., vii., Ep. xxxvii., 1, "Nosti mortiferum quæstoris, Castrice, signum, Est operæ pretium discere theta novum." Auson., Ep. 128, "Tuumque nomen theta sectilis signet." Sidon., Carm., ix., 335, "Isti qui valet exarationi Districtum bonus applicare theta." (It was also used on tomb-stones, and as a mark to tick off the dead on the muster-roll of soldiers.)