Ion., old Att., Dor. form of εἰς: all compounds must be sought under εἰσ-, except a few words which appear only in the form ἐσ-. II Arc., = ἐκ, IG5(2).6.49 (Tegea, iv B. C.), al. ; also Delph., BCH23.611, and Arg., IG4.492 (Mycenae, vi B. C.) ; v. ἐκ init.