Note 84 — Chapter XII · DE ANIMÂ, ETC.
Reading edition
Aristot. De Animâ, II. viii. p. 419, b. 4 seq. He calls air ψαθυρός, εὔθρυπτος (p. 420, a. 1-8), — εὐδιαίρετος, εὐόλισθος (Themistius, pp. 116, 117, Sp.) — “quod facilé diffluit” (Trendelenburg, Comm. p. 384). He says that for sonorous purposes air ought to be ἀθροῦν — compact or dense: sound reverberates best from metals with smooth surface, p. 420, a. 25.