[Footnote 403: O.E. Schmidt, Briefwechsel Cicero's, pp. 66 and 454; but see his Cicero's Villen, p. 46, note.]
[Footnote 404: ad Att. xii. 19 init.]
[Footnote 405: See Seneca, Epist. 69, on the disturbing influence of constant change of scene.]
[Footnote 406: There is an exception in the young Cicero's letter to
Tiro, translated above, p. 202.]
[Footnote 407: Censorinus, De die natali, 23. 6.; Pliny, N.H. vii. 213. On the whole subject of the division of the day see Marquardt, Privatlben, p. 246 foll.]
[Footnote 408: In the XII Tables only sunrise and sunset were mentioned (Pliny, l.c. 212). Later on noon was proclaimed by the Consul's marshal (Varro, de Ling. Lat. vi. 5), and also the end of the civil day. Cp. Varro, L.L. vi. 89.]
[Footnote 409: Cic. pro Quinctio, 18. 59.]
[Footnote 410: See the article "Horologium" in Dict. of Antiquities, vol. i.]
[Footnote 411: Our modern hours are called equinoctial, because they are fixed at the length of the natural hour at the equinoxes. This system does not seem to have come in until late in the Empire period.]
[Footnote 412: For the water-clock see Marquardt, op. cit. p. 773 foll.]