Vitruvius, De architectura, ix, §§7–8, and Ptolemy, Peri analemmatos, §§19, 120, 139–44, 157, 158.
2.
LocherKurt, “A further Hellenistic conical sundial from the Theatre of Dionysos in Athens”, Journal for the history of astronomy, xx (1989), 60–62; “Two Greco-Roman sundials from Alexandria and Dion”, ibid., xxiv (1993), 300–2; and “Three further Greco-Roman conical sundials from Palmyra, Naples and Abu Mina”, ibid., xxvi (1995), 159–63.
3.
GibbsSharon L., Greek and Roman sundials (New Haven, 1976), hereafter: Gibbs, Sundials.
4.
Gibbs, Sundials, Fig. 17.
5.
Gibbs, Sundials, 33 top.
6.
Gibbs, Sundials, 33 foot.
7.
Gibbs, Sundials, 33 foot.
8.
HüttigM., “The conical sundial from Abû Mînâ: A second analysis”, Bulletin de la Société d'Archéologie Copte, xxxvii (1998), 135–41.
9.
De RossiV. G. M., Torri costiere del Lazio (Rome, 1971), 47–48 and Figs 71–74.
10.
Gibbs, Sundials, §1b.
11.
Gibbs, Sundials, §3d.
12.
Gibbs, Sundials, §3d.
13.
GnoliR., Marmora romana (Rome, 1971), 225, and PullenH. P., Handbook of ancient Roman marbles (London, 1894), 46.
14.
MoscettiE., “Montelibretti, località Passo Corese: Complesso di età romana”, Annali della Società Nomentana di Storia e Archeologia, iii (1997), 151.
15.
Gibbs, Sundials, 334.
16.
Gibbs, Sundials, §3a.
17.
RossiS. and SetteleG., “Sopra vari monumenti e particularmente di un antico orologio solare”, Bullettino dell'Instituto di Corrispondenza Archeologica per l'anno 1838 (Rome, 1838), 97–109.
18.
Gibbs, Sundials, Fig. 9 and context.
19.
Gibbs, Sundials, Fig. 17.
20.
See ref. 8.
21.
Gibbs, Sundials, 311.
22.
Gibbs, Sundials, 307.
23.
Gamer-WallenI. and ZibeliusK., “Der Löwentempel von Naqca in der Butana (Sudan), I: Forschungsgeschichte und Topographie”, Beihefte zum Tübinger Atlas des Vorderen Orients, Reihe B, xlviii/1 (1983), 33–34.
24.
WildungD., Die Stadt in der Steppe: Grabungen des Aegyptischen Museums Berlin in Naga, Sudan (Berlin, 1999), 64, and KroeperK. and KrzyzaniakL., “Naga Project, Egyptian Museum Berlin: The Amun Temple complex preliminary report, Seasons 1 and 2”, Archéologie du Nil Moyen, Fouilles au Soudan et en Nubie, viii (1998), 204–5 and Plate V.
