I think I have pointed out the infallible touchstone of supposed antiquity.

I premise a few general rules on that point, on the nature, namely, of the evidence to be received in such cases.

Meanwhile be pleased to observe, for example, that I could press into my service Claudian's famous line, Ille Caledoniis posuit qui castra pruinis.
For pruinis, though interpreted to mean hoar frosts, to which I own we are somewhat subject in this north-eastern sea-coast, may also signify a locality, namely, Prunes; the Castra Pruinis posita would therefore be the Kaim of Kinprunes.

But I waive this, for I am sensible it might be laid hold of by cavillers as carrying down my Castra to the time of Theodosius, sent by Valentinian into Britain as late as the year 367, or thereabout.

No, my good friend, I appeal to people's eye-sight.