Codinus (Antiquitat. p. 8 [p. 17, ed. Bonn.]) affirms that the foundations of Constantinople were laid in the year of the world 5837 (A.D. 329), on the 26th of September, and that the city was dedicated the 11th of May, 5838 (A.D. 330). He connects these dates with several characteristic epochs, but they contradict each other; the authority of Codinus is of little weight, and the space which he assigns must appear insufficient. The term of ten years is given us by Julian (Orat. i. p. 8), and Spanheim labours to establish the truth of it (p. 69-75), by the help of two passages from Themistius (Orat. iv. p. 58) and of Philostorgius (1. ii. c. 9), which form a period from the year 324 to the year 334. Modern critics are divided concerning this point of chronology, and their different sentiments are very accurately described by Tillemont, Hist. des Empereurs, tom. iv. p. 619-625.