Clearchus（*Kle/arxos), of Soli, one of Aristotle's pupils, was the author of a number of works, none of which are extant, on a very great variety of subjects. he seems to have been the same person whom Athenaeus (i. p. 4a.) calls τρεχέδειπνος, or the diner out.
WorksA list of his principal writings is subjoined, all the references which may be found in Vossius (dc Hist. Graec. pp. 83, 84, ed. Westermann) being omitted for the sake of brevity:--
1. ΒίοιΒίοι, a biographical work, extending to at least eight books. (See Athen. 12.548d.) 2. A commentary on Plato's "Timaeus." (Fabric. Bibl. Graec. iii. p. 95.)
Πλάτωνος ἐγκώμιον (D. L. 3.2.)
Περὶ τῶν ἐν τῇ Πλάτωνος Πολιτείᾳ μαθηματικῶς εἰρημένων.
5. ΓεργίθιοςΓεργίθιος, a treatise on flattery, so called, according to Athenaeus (vi. p. 255), from Gergithius, one of Alexander's courtiers.
Περὶ παιδείας. (D. L. 1.9; Athen. 15.697e.)
Πεπὶ γρίφων, on riddles.
10. ἘρωτικάἘρωτικά, probably historical, a collection of lovestories, not unmixed with the discussion of some very odd questions on the subject (e. g. Athen. 12.553f.).
Περὶ γραφῶν, on paintings. (Athen. 14.648f.)
12. ΠεριγραφαίΠεριγραφαί? The reading in Athenaeus (vii. ad init.) is doubtful ; see Dalechamp and Casaubon, ad loc.
Περὶ νάρκησς, on the Torpedo.
Περὶ τῶν ἐνύδρων, on water-animals.
Περὶ Δινῶν, on sand-wastes.
Περὶ σκελετῶν, an anatomical work. (Casaub. ad Athen. ix. p. 399.)
Περὶ ὕπνου, the genuineness of which, however, has been called in question. (Fabr. Bibl. Graec. iii. p. 481.) This is the work to which Clement of Alexandria refers (Strom. 1.15) for the account of the philosophical Jew, with whom Aristotle was said to have held much communication, and therein, by his own confession, to have gained more than he imparted.