This Theory was derived from the famous 1260 Days of Prophecy[54], taking Days for Years, and computing from the Commencement of the common Christian Era. But when the Year 1260 passed away and the Prophecy was not fulfilled, the Followers of _Joachim_ attempted to correct the Hypothesis of their Master, and many of them (as for Example the _Beguins_[55], who adopted the Speculations of _Peter John de Oliva_,) took hold of the 1335 Days of _Daniel_, and from them fixed upon the Year 1335, as the Date of _Antichrist’s_ Destruction. The Editor has not had Access to any of the Remains of _Peter John’s_ Writings, but he is informed by a learned Friend, in whose Accuracy he has the fullest Confidence, that _Peter John_, in his _Tractatus de Antichristo_[56], has fixed upon the Year 1356, as the Year of the Revelation, not the Destruction, of _Antichrist_, by adding 96, the supposed Date of the _Apocalypse_, to 1260. _Joachim_, however, in greater Conformity with Scripture, made the Termination of the 1260 Days, (or Years, as he considered them,) the Period of the End, not of the Beginning of _Antichrist_. Our Author’s Theory[57], supported by a Cabbalistic Computation from the Letters of the Alphabet, which the Editor has not been able to discover elsewhere, makes the Year 1400 the Era of the Revelation of _Antichrist_; and _Walter Brute_[58], in 1390, appears to have put forward a Conclusion not very dissimilar, although maintained on different Grounds. His Argument was drawn from the _Joachitic_ Theory of the prophetic Days taken for Years, and from the Supposition that the 1335 Days of _Daniel_ commenced at the Desolation of the Temple under _Adrian_. On the whole then it is unquestionable, that _Wycliffe_ had before him some spurious Productions of _Beguinism_, circulated under the Name of the Abbot _Joachim_, but which could not possibly have been derived from the genuine Writings of that Enthusiast. None of these spurious Books, so far as the Editor’s limited Means of Research have enabled him to ascertain, have been preserved in our Libraries, or are noticed by the Authors who treat of the Doctrines of _Joachim_ and his Successors. It is evident from p. xxxi, that the Tract before us was composed in or after the Year 1356, the fatal Year of the Revelation of _Antichrist_, according to the Followers of _Peter John_. Ibid. line 9. þe seuynty & nyne chapitre.