In preparing for the press an edition of Aeneas Tacticus, which was left in manuscript form by the late Mr. L. W. Hunter, I have had to consider a good deal the details of the fastening of the Greek city gate. The general principles are familiar to everyone: a gate with two wings (σανίδες) opening inwards only, with a wooden bar (μοχλός) placed horizontally across it on the inside, secured by a metal bolt (βάλανος) which passed through a vertical hole bored in the μοχλός and into a socket (βαλανοδόκη) in the stone beneath, the top of the βάλανος, when pushed home, being well below the top of the μοχλός. The βάλανος must have been a heavy iron pin, thick enough to stand a big strain, since if anyone tried to force the gate everything depended on the resistance of the βάλανος: I imagine it something like twelve inches long and two to three inches thick. It will be remembered that at Plataea in 431 B.C. a soldier fastened one of the gates στυρακίῳ ἀκοντίον ἀντι βαλάνου χρησάμενος ἐς τὸν μοχλόν (Thuc. ii. 4. 3).