besieged by Bulgarians, [205];
commercial importance of, [224];
riots in, [247];
the Crusaders at, [264];
taken by the Franks and Venetians, [284];
stormed and sacked a second time, [287], [288];
devastation of, by the Latins, [291];
besieged by John Ducas, [301];
recovered by the Greeks, [305];
taken by John Paleologus, [329];