We are now at length placed in a position to consider the condition of the ultimate portion of the work, i.e., the last twenty books, Sixty-one to Eighty inclusive. In general it may be said that for this section of the history we are thrown back upon an epitome of Ioannes Xiphilinus, who lived about fifty years earlier than the Ioannes Zonaras recently under discussion. To this general statement there are two important exceptions. First, even as early as Xiphilinus wrote (eleventh century) nearly two books of this last portion had perished. Book Seventy, containing the reign of Antoninus Pius, was entirely gone save a few miserable chapters, and Book Seventy-one had suffered the same fate in its beginning, so that our account of the renowned Marcus Aurelius begins practically with the year 172 instead of 161. The gap thus created has been partially filled by extracts of every conceivable quality and merit, from Suidas, from John of Antioch, even from Asinius Quadratus. This on the side of loss: on the side of gain there are numerous little excerpts (just as in the case of the early books) that may serve to fill crevices or cover scars, and above all there exists a parchment manuscript, known as Vaticanus 1288, older than Mediceus A, older than Venetus A, and containing Books Seventy-eight and Seventy-nine probably very much as Dio wrote them, save that the account is mutilated at beginning and end. Boissevain concludes (by comparing the Table of Contents found with a remark of Photius) that this particular piece of salvage was originally Books Seventy-nine and Eighty (instead of Seventy-eight and Seventy-nine), that Book Eighty of Dio was really what is now commonly called Seventy-nine _and_ Eighty, and that the so-called Book Eighty (of only five chapters) was but a kind of epilogue to the whole work. Whatever we may decide respecting the merits of his argument, the important fact is that here for a short distance we have Dio's original narrative, as in Books Thirty-six to Sixty, and are no longer obliged to depend upon epitomes. A word of explanation about Xiphilinus must come next. This Xiphilinus was a native of Trapezos (Trebizond) and became a monk at Constantinople. Here, at the behest of Michael VII. Ducas (1071-1078) he made an abridgment of Books Thirty-six to Eighty of Dio; thus it is his version of the lost books Sixty-one to Eighty on which we are compelled to rely. His task was accomplished with an even greater degree of carelessness than is customary in such compositions, and it may be said that his ability or, at least, his good will is not nearly so great as that of Zonaras. Yet he is largely a _pis aller_ for the would-be reader of Cassius Dio.