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. If, during the play of the hand, the error be detected, the tricks may be counted face downward, 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.
THE REVOKE.
71. Is when a player, holding one or more cards of the suit led, plays a card of a different suit.
72. The penalty for a revoke—
I. Is at the option of the adversaries, who at the end of the hand may either take three tricks from the revoking player or deduct three points from his score, or add three to their own score;
II. Can be claimed for as many revokes as occur during the hand;
III. Is applicable only to the score of the game in which it occurs;