Dramatic principle of classification--was inherited by Thrasyllus from Aristophanes 295 Authority of the Alexandrine library--editions of Plato published, with the Alexandrine critical marks _ib._ Thrasyllus followed the Alexandrine library and Aristophanes, as to genuine Platonic works 296 Ten spurious dialogues, rejected by all other critics as well as by Thrasyllus--evidence that these critics followed the common authority of the Alexandrine library 297 Thrasyllus did not follow an internal sentiment of his own in rejecting dialogues as spurious 298 Results as to the trustworthiness of the Thrasyllean Canon 299 CHAPTER VII. Platonic Canon, as Appreciated and Modified by Modern Critics. The Canon of Thrasyllus continued to be generally acknowledged, by the Neo-Platonists, as well as by Ficinus and the succeeding critics after the revival of learning 301 Serranus--his six Syzygies--left the aggregate Canon unchanged, Tennemann--importance assigned to the Phædrus 302 Schleiermacher--new theory about the purposes of Plato. One philosophical scheme, conceived by Plato from the beginning--essential order and interdependence of the dialogues, as contributing to the full execution of this scheme. Some dialogues not constituent items in the series, but lying alongside of it. Order of arrangement 303 Theory of Ast--he denies the reality of any preconceived scheme--considers the dialogues as distinct philosophical dramas 304 His order of arrangement. He admits only fourteen dialogues as genuine, rejecting all the rest 305 Socher agrees with Ast in denying preconceived scheme--his arrangement of the dialogues, differing from both Ast and Schleiermacher--he rejects as spurious Parmenidês, Sophistês, Politikus, Kritias, with many others 306 Schleiermacher and Ast both consider Phædrus and Protagoras as early compositions--Socher puts Protagoras into the second period, Phædrus into the third 307 K. F. Hermann--Stallbaum--both of them consider the Phædrus as a late dialogue--both of them deny preconceived order and system--their arrangements of the dialogues--they admit new and varying philosophical points of view _ib._ They reject several dialogues 309 Steinhart--agrees in rejecting Schleiermacher's fundamental postulate--his arrangement of the dialogues--considers the Phædrus as late in order--rejects several _ib._ Susemihl--coincides to a great degree with K. F. Hermann--his order of arrangement 310 Edward Munk--adopts a different principle of arrangement, founded upon the different period which each dialogue exhibits of the life, philosophical growth, and old age, of Sokrates--his arrangement, founded on this principle. He distinguishes the chronological order of composition from the place allotted to each dialogue in the systematic plan 311