The gradual losses of the Latins may be traced in the third fourth, and fifth books of the compilation of Ducange: but of the Greek conquests he has dropped many circumstances, which may be recovered from the larger history of George Acropolita, and the three first books of Nicephorus, Gregoras, two writers of the Byzantine series, who have had the good fortune to meet with learned editors Leo Allatius at Rome, and John Boivin in the Academy of Inscriptions of Paris.