20. Synesius passed three years (A.D. 397-400) at
Constantinople as deputy from Cyrene to the emperor
Arcadius. He presented him with a crown of gold, and
pronounced before him the instructive oration de Regno (p.
1-32, edit. Petav. Paris, 1612). The philosopher was made
bishop of Ptolemais, A.D. 410, and died about 430. See
Tillemont, Mem. Eccles. tom. xii. p. 499, 554, 683-685.