Enquire within upon everything The great Victorian-era domestic standby
xv. Should a player play out of his turn, or with a wrong ball, and
this be discovered by his antagonist before a second stroke in error has been made, the turn is lost, and all points made after the mistake, and the balls shall remain as they lay at the time the mistake was discovered, or be replaced to the satisfaction of the antagonist. But if he has made a second stroke before the error is discovered, he continues his break, and the next player follows with the ball that is next in rotation to the one with which he has played, and is liable to lose his turn, and all points made therein, if he plays with that which would have been the right ball if no mistake had been made.