, pp. 185 to 193, and his notes and excursus embodied in this volume, especially that appended to Epist. Euseb. p. 77; Zahn’s Marcellus, pp. 11–27 (also p. 87), perhaps the best modern discussion; Harnack ii. pp. 228–230, and note 3; Loofs §§32–34; Shedd i. 362–372; and the Introduction to the Tomus and ad Afros in this volume pp. 482, 488. The use of οὐσία in Aristotle is tabulated by Bonitz in the fifth volume (index) to the Berlin edition: its use in Plato is less frequent and less technical, but see the brief account in Liddell and Scott.