The 86 verses of Dorotheus printed at the end of Koechly's Manetho, 33 of which had already been published by Salmasius in his exercitationes Plinianae or his diatribae de annis climactericis, were edited by Iriarte from a scrap of manuscript at Madrid, into which they had been copied, as we now know, from the first book of the astrological treatise of Hephaestion of Thebes, who took Dorotheus for his chief authority. To these 86 verses nearly 300 more, by far the most of which are preserved in the second and third books, still unpublished, of Hephaestion's work, have now been added, in the catalogus codicum astrologorum Graecorum vol. vi (1903) pp. 67 and 91–113, by Mr W. Kroll, the best editor they could have found ; a scholar who combines critical talent, knowledge of Greek, and knowledge of astrology, more happily than any of his associates, and who has emended much of the very corrupt text with conspicuous ability and success. A good many additional corrections, chiefly grammatical and metrical, have been made by Mr Ludwich in the Rheinisches Museum for 1904, pp. 42–54