No Easter cycle yet devised is free from errors, which have to be met by adjustments; but the Cycle of Hippolytus was such that the errors accumulated rapidly. It was more than two days wrong at the end of the first sixteen years; and five days wrong at the end of the second cycle; at the end of the third cycle it would be nine days wrong[154]. This must have been soon discovered; and the cycle had to be discarded. It is the earliest Easter cycle known to us. A cycle on the same lines as that of Hippolytus, which has been (probably incorrectly) attributed to St Cyprian, will be found in Fell’s edition of Cyprian (1682), among the works commonly assigned to that writer. By whomsoever it was composed it is ushered in with a great flourish of trumpets, and the author feels sure that he has been led by nothing short of divine inspiration to the discovery. These Tables can be assigned to A.D. 243. One cannot but suspect that the author had got hold of the Hippolytean Tables before their worthlessness was discovered. Such seem to have been the best efforts of the learning of Western Christendom in the third century to deal with the Paschal problem. Nor at this period was the Church of Alexandria, which at a later date became the paramount authority on such questions, any better equipped. Dionysius, about the middle of the third century, justly styled by Eusebius ‘the great bishop of Alexandria,’ made use of the eight-year cycle, which, like its variant, the sixteen-year cycle, gathered error rapidly. It was, however, another distinguished Alexandrian, more than a quarter of a century later, who was the first, so far as we know, to make use of the old nineteen-year cycle for the determination of Easter. This was Anatolius, a native of Alexandria, and eminent for learning of various kinds (among which arithmetic, geometry, and astronomy are particularised), who became bishop of Laodicea in Syria Prima in A.D. 270. The nineteen-year cycle, with some modifications, eventually, though slowly, displaced all rivals[155]. II. _The Council of Nicaea and the Easter Controversy._ We may pass on now to the consideration of the determinations on this question arrived at by the Council of Nicaea.