We here learn that in the heroic genealogy of the Asklepiads, the son of Machaon himself bore the name of Nikomachus. I do not think that Will. v. Humboldt and Bernays are warranted in calling Aristotle "ein Halbgrieche," "kein vollbürtiger Hellene"--(Die Dialoge des Aristoteles, pp. 2-56-134). An Hellenic family which migrated from Athens, Chalkis, Corinth, etc., to establish a colony on the coast of Thrace, or Asia Minor, did not necessarily lose its Hellenism. One cannot designate Demokritus, Xenokrates, Anaxagoras, Empedokles, &c., half Greeks. Diogenes here especially cites Hermippus (B.C. 220-210), from whom several of his statements in this and other biographies appear to have been derived. The work of Hermippus seems to have been entitled "Lives of the Philosophers" (v. 2), among which lives that of Aristotle was one. Hermippus mentioned, among other matters, communications made to Aristotle by Stroebus (a person engaged in the service of Kallisthenes as reader) respecting the condemnation and execution of Kallisthenes in Baktria, by order of Alexander (Plutarch, Alex. c. 54). From what source did Hermippus derive these statements made by Stroebus to Aristotle?] Respecting the character of his youth, there existed, even in antiquity, different accounts. We learn that he lost his father and mother while yet a youth, and that he came under the guardianship of Proxenus, a native of Atarneus who had settled at Stageira. According to one account, adopted apparently by the earliest witnesses preserved to us,[3] he was at first an extravagant youth, spent much of his paternal property, and then engaged himself to military service; of which he soon became weary, and went back to Stageira, turning to account the surgical building, apparatus, and medicines left by his father as a medical practitioner. After some time, we know not how long, he retired from this profession, shut up the building, and devoted himself to rhetoric and philosophy. He then went to Athens, and there entered himself in the school of Plato, at the age of thirty.[4] The philosophical life was thus (if this account be believed) a second choice, adopted comparatively late in life.[5] The other account, depending also upon good witnesses, represents him as having come to Athens and enlisted as pupil of Plato, at the early age of seventeen or eighteen: it omits all mention of an antecedent period, occupied by military service and a tentative of medical profession.[6] In both the two narratives, Aristotle appears as resident at Athens, and devoting himself to rhetoric and philosophy, from some period before 360 B.C. down to the death of Plato in 347 B.C.; though, according to the first of the two narratives, he begins his philosophical career at a later age, while his whole life occupied seventy years instead of sixty-two years.