Herbert Weir Smyth, A Greek Grammar for Colleges

““ἐπιπί_πτει χιὼν ἄπλετος ὥστε ἀπέκρυψε καὶ τὰ ὅπλα καὶ τοὺς ἀνθρώπους” an immense amount of snow fell so that it buried both the arms and the men” X. A. 4.4.11, ““εἰς τοσοῦτον ὕβρεως ἦλθον ὥστ᾽ ἔπεισαν ὑ_μᾶς ἐλαύνειν αὐτόν” they reached such a pitch of insolence that they persuaded you to expel him” I. 16.9 (cp. 2258 a), οὕτω σκαιὸς εἶ . . . ὥστ᾽ ου᾽ δύνασαι κτλ. are you so stupid that you are not able, etc. D. 18.120 (of a definite fact; with μὴ δύνασθαι the meaning would be so stupid as not to be able, expressing a characteristic). So after the locution τοσούτου δέω, as τοσούτου δέω περὶ τῶν μὴ προσηκόντων ἱκανὸς εἶναι λέγειν, ὥστε δέδοικα κτλ. I am so far from able to speak about that which does not refer to my case that I fear, etc. L. 17.1. ὡς is very rare: ““νομίζω οὕτως ἔχειν ὡς ἀποστήσονται αὐτοῦ αἱ πόλεις” I consider that it is the case that the cities will revolt from him” X. H. 6.1.14.

a. So when ὥστε introducing an independent sentence practically has the force of οὖν, τοίνυν, τοιγαροῦν and so therefore, consequently. Thus ““καὶ εἰς μὲν τὴν ὑστεραία_ν οὐχ ἧκεν: ὥσθ᾽ οἱ Ἕλληνες ἐφρόντιζον” and on the next day he did not come; consequently the Greeks were anxious” X. A. 2.3.25. Cp. 2275. This use appears sometimes with the infinitive: ““ὥστ᾽ ἐμὲ ἐμαυτὸν ἀνερωτᾶν” and so I kept asking myself” P. A. 22e.