Note 38 — Chapter XXVIII · THEÆTETUS.
Reading edition
Plato, Theætêt. p. 157 B. δεῖ δὲ καὶ κατὰ μέρος οὕτω λέγειν καὶ περὶ πολλῶν ἀθροισθέντων, ᾧ δὴ ἀθροίσματι ἄνθρωπόν τε τίθενται καὶ λίθον καὶ ἕκαστον ζῶόν τε καὶ εἶδος.
In this passage I follow Heindorf’s explanation which seems dictated by the last word εἶδος. Yet I am not sure that Plato does really mean here the generic aggregates. He had before talked about sights, sounds, hot, cold, hard, &c., the separate sensations. He may perhaps here mean simply individual things as aggregates or ἀθροίσματα — a man, a stone, &c.