Cards Played in Error, or Not Played to a Trick
67. If the third hand play before the second, the fourth hand may play before his partner.
68. Should the third hand not have played, and the fourth play before his partner, the latter may be called on to win, or not to win the trick.
69. If any one omit playing to a former trick, and such error be not discovered until he has played to the next, the adversaries may claim a new deal; should they decide that the deal stand good, the surplus card at the end of the hand is considered to have been played to the imperfect trick, but does not constitute a revoke therein.
70. If any one play two cards to the same trick, or mix his trump, or other card, with a trick to which it does not properly belong, and the mistake be not discovered until the hand is played out, he is answerable for all consequent revokes he may have made.30 If, during the play of the hand, the error be detected, the tricks may be counted face downwards, in order to ascertain whether there be among them a card too many: should this be the case they may be searched, and the card restored; the player is, however, liable for all revokes which he may have meanwhile made.