Note 032
The new wall of Theodosius was constructed in the year 413. In 447 it was thrown down by an earthquake, and rebuilt in three months by the diligence of the praefect Cyrus. The suburb of the Blachernae was first taken into the city in the reign of Heraclius. Ducange, Const. l. i. c. 10, 1 l .
Note to Chapter 17 of Decline and Fall by Gibbon