_Authorship._--It may be regarded as now established that the treatise discovered in Egypt is identical with the work upon the constitution of Athens that passed in antiquity under the name of Aristotle. The evidence derived from a comparison of the British Museum papyrus with the quotations from the lost work of Aristotle's which are found in scholiasts and grammarians is conclusive. Of fifty-eight quotations from Aristotle's work, fifty-five occur in the papyrus. Of thirty-three quotations from Aristotle, which relate to matters connected with the constitution, or the constitutional history of Athens, although they are not expressly referred to the [Greek: Athenaion politeia], twenty-three are found in the papyrus. Of those not found in the papyrus, the majority appear to have come either from the beginning of the treatise, which is wanting in the papyrus, or from the latter portion of it, which is mutilated. The coincidence, therefore, is as nearly as possible complete. It may also be regarded as established by internal evidence that the treatise was composed during the interval between Aristotle's return to Athens in 335 B.C. and his death in 322. There are two passages which give us the latter year as the _terminus ad quem_, viz. c. 42. 1 and c. 62. 2. In the former passage the democracy which is about to be described is spoken of as the "present constitution" ([Greek: e nun katastasis tes politeias]). The democratic constitution was abolished, and a timocracy established, on the surrender of Athens to Antipater, at the end of the Lamian War, in the autumn of 322. At the same time Samos was lost; it is still reckoned, however, among the Athenian possessions in the latter passage. On the other hand, the foreign possessions of Athens are limited to Lemnos, Imbros, Scyros, Delos and Samos. This could only apply to the period after Chaeronea (338 B.C.). In c. 61. 1, again, mention is made of a special Strategus [Greek: epi tas symmorias]; but it can be proved from inscriptions that down to the year 334 the generals were _collectively_ concerned with the symmories. Finally, in c. 54. 7 an event is dated by the archonship of Cephisophon (329). We thus get the years 329 and 322 as fixing the limits of the period to which the composition of the work must be assigned. It follows that, whether it is by Aristotle or not, its date is later than that of the _Politics_, in which there is no reference to any event subsequent to the death of Philip in 336. The only question as to authorship that can fairly be raised is the question whether it is by Aristotle or by a pupil; i.e. as to the sense in which it is "Aristotelian." The argument on the two sides may be summarized as follows:--