[6] Nem. III. 40-42. (Donaldson.)
[7] Nem. VI. sub in.
[8] The word differentiation (ἑτεροίωσις) seems to have been first used by Diogenes Apolloniates. Simpl. Phys. fol. 326 ff., quoted by Ritter and Preller, Hist. Phil., p. 126 (6th ed.)
[9] Ritter and Preller, p. 112.
[10] Ritter and Preller p. 8.
[11] Die Philosophie der Griechen, I. p. 401 (3rd ed.)
[12] Ritter and Preller, p. 54.
[13] Ritter and Preller, p. 54.
[14] Ib.
[15] Metaph. I. v.