The era of the death of Elagabalus, and of the accession of Alexander, has employed the learning and ingenuity of Pagi, Tillemont, Valsecchi, Vignoli, and Torre bishop of Adria. The question is most assuredly intricate; but I still adhere to thc authority of Dion; the truth of whose calculations is undeniable, and the purity of whose text is justified by the agreement of Xiphilin, Zonaras, and Cedrenus. Elagabalus reigned three years, nine months, and four days, from his victory over Macrinus, and was killed March 10, 222. But what shall we reply to the medals, undoubtedly genuine, which reckon the fifth year of his tribunitian power? We shall reply, with the learned Valsecchi, that the usurpation of Macrinus was annihilated, and that the son of Caracalla dated his reign from his father's death. After resolving this great difficulty, the smaller knots of this question may be easily untied, or cut asunder.