15. If a player fail to hit another ball, it counts one to his opponent; but if by the same stroke the player’s ball is forced over the table or into any pocket it counts three to his opponent.

16. Forcing any ball off the table, either before or after the score, causes the striker to gain nothing by the stroke.

17. In the event of either player using his opponent’s ball and scoring, the red must be spotted and the balls broken again by the non-striker; but if no score is made, the next player may take his choice of balls and continue to use the ball he so chooses to the end of the game. No penalty, however, attaches in either case unless the mistake be discovered before the next stroke.

18. No person except an opponent has a right to tell the player that he is using the wrong ball, or to inform the non-striker that his opponent has used the wrong ball; and if the opponent does not see the striker use the ball, or, seeing him, does not claim the penalty, the marker is bound to score to the striker any points made.

19. Should the striker [whose ball is in hand], in playing up the table on a ball or balls in baulk, either by accident or design, strike one of them [with his own ball] without first going out of baulk, his opponent may have the balls replaced, score a miss, and follow on; or may cause the striker to play again, or may claim a foul, and have the red spotted and the balls broken again.

20. The striker, when in hand, may not play at a cushion within the baulk (except by going first up the table) so as to hit balls that are within or without the line.

21. If in hand, and in the act of playing, the striker shall move his ball with insufficient strength to take it out of baulk, it shall be counted as a miss to the opponent, who, however, may oblige him to replace his ball and play again. [Failing to play out of baulk, the player may be compelled to play his stroke over again.]

22. If in playing a pushing stroke the striker pushes more than once it is unfair, and any score he may make does not count. His opponent follows by breaking the balls.

23. If in the act of drawing back his cue the striker knocks the ball into a pocket, it counts three to the opponent, and is reckoned a stroke.

24. If a foul stroke be made while giving a miss, the adversary may enforce the penalty or claim the miss, but he cannot do both.