6. If when moving the cue backward and forward, and prior to a stroke, it touches and moves the ball, the ball must be replaced to the satisfaction of an adversary, otherwise it is a foul stroke; but if the player strikes, and grazes any part of the ball with any part of the cue, it must be considered a stroke, and the opponent follows on.
7. If a ball rebounds from the table, and is prevented in any way, or by any object except the cushion, from falling to the ground, or if it lodges on a cushion and remains there, it shall be considered off the table, unless it is the red, which must be spotted.
8. A ball on the brink of the pocket need not be “challenged”: if it ceases running and remains stationary, then falls in, it must be replaced, and the score thus made does not count.
9. Any ball or balls behind the baulk-line, or resting exactly upon the line, are not playable if the striker be in hand, and he must play out of baulk before hitting another ball.
10. Misses may be given with the point or butt of the cue, and shall count one for each against the player; or if the player strike his ball with the cue more than once a penalty shall be enforced, and the non-striker may oblige him to play again, or may call on the marker to place the ball at the point it reached or would have reached when struck first. [The butt may also be used for playing a ball in hand up the table in order to strike a ball in baulk.]
11. Foul strokes do not score to the player, who must allow his opponent to follow on. They are made thus: By striking a ball twice with the cue; by touching with the hand, ball, or cue an opponent’s or the red ball; by playing with the wrong ball; by lifting both feet from the floor when playing; by playing at the striker’s own ball and displacing it ever so little (except while taking aim, when it shall be replaced, and he shall play again).
12. The penalty for a foul stroke is losing the lead, and, in case of a score, an opponent must have the red ball spotted, and himself break the balls, when the player who made the foul must follow suit, both playing from the D. If the foul is not claimed the player continues to score, if he can.
13. After being pocketed or forced off the table the red ball must be spotted on the top spot, but if that is occupied by another ball the red must be placed on the centre spot between the middle pockets.
14. If in taking aim the player moves his ball and causes it to strike another, even without intending to make a stroke, a foul stroke may be claimed by an adversary. (See Rule Fifteenth.)