There are cases where examinations are admitted, namely, before the coroner, and before magistrates in cases of felony. That appears to me to go rather in support of the general rule than in destruction of it. Every exception that can be accounted for is so much a confirmation of the rule that it has become a maxim, Exceptio probat regulam.

The King v. Inhabitants of Eriswell (1790), 3 T. R. 722.