5. If the balls are disturbed accidentally through the medium of any agency other than the player himself, they must be replaced and the player allowed to proceed.
6. If in the act of playing the player disturbs any ball other than his own, he cannot make a counting stroke, but he may play for safety. Should he disturb a ball after having played successfully, he loses his count on that shot; his hand is out, and the ball so disturbed is placed back as nearly as possible in the position which it formerly occupied on the table, the other balls remaining where they stop.
7. Should a player touch his own ball with the cue or otherwise previous to playing, it is foul, the player loses one, and cannot play for safety. It sometimes happens that the player after having touched his ball gives a second stroke, then the balls remain where they stop, or are replaced as nearly as possible in their former position at the option of his opponent.
8. When the cue-ball is very near another, the player shall not play without warning his adversary that they do not touch, and giving him sufficient time to satisfy himself on that point.
9. When the cue-ball is in contact with another, the balls are spotted and the player plays with his ball in hand.
10. Playing with the wrong ball is foul. However, should the player using the wrong ball play more than one shot with it, he shall be entitled to his score just the same as if he had played with his own; as soon as his hand is out, the white balls must change places, and the game proceed as usual.
On Foul Strokes.—It is a foul, and no count can be made:
1. If a stroke is made except with the point of the cue.
2. If the cue is not withdrawn from the cue-ball before the latter comes in contact with an object-ball.