Played with left side, the cue is shifted to the left of the centre, but is still parallel to the original direction. As before, on delivery of the stroke ball 1 travels to ball 2, but after impact follows the dotted line 1′ L L′, returning from the cushion at once more perpendicularly and with reduced speed, the left side with which ball 1 is charged tending to reduce velocity, specially after impact with the cushion. In respect to this stroke, left side, conveying as it does rotation in a direction contrary to that of the ball’s path, is termed reverse. Of course, if the other side of ball 2 were played on, the left side would become direct and the right side reverse.
EDGE OF CUSHION
Fig. 7
There, in a nutshell, lies nearly all that is essential in the matter of side. A man with ordinary powers of thought can for himself apply the lesson either to cannons or to losing hazards, and nothing but practice, as far as possible under the supervision of a master, will suffice to produce the confidence and certainty which is necessary to good play. Be careful about the alignment of the cue; see that the left hand, which forms the bridge, is so placed that the part of forefinger and thumb on which the cue lies is precisely opposite the point on ball 1 to be struck, and as there is special danger of a slip or miss-cue when much side is used, never neglect to chalk the cue carefully before the stroke. Attention to this, though it seems but a small and self-evident matter, will save many a game and much temper.
There are, however, certain other matters connected with rotation which, though not so important as what has already been explained as far as the game of billiards is concerned, are yet of considerable interest, partly as they affect the game, but chiefly in so far as they may add to our knowledge of the various forces which affect a ball in motion. Amongst these is the side which may be acquired from friction with the cushion. The probability that such side is so acquired is understood, but the conditions are little known. M. Vignaux remarks that it depends on the angle of impact, on the velocity, and on the strength; and he gives as an example a plain stroke played gently in a corner of the table, when the ball always has a tendency to come off at a diminished angle of reflexion, specially when the angle of incidence is about 45. The side acquired is probably greatest when a ball is played along and touching a cushion; if played from baulk up the left cushion the tendency would be for the ball to acquire right side, and up the right cushion left side; but all such strokes are complicated by the much more important friction with the cloth on the bed of the table. It is unnecessary here to speculate further on a matter which so slightly influences the game. Of vastly greater significance, though its action is still most imperfectly apprehended, is the effect of the nap of the cloth on the rotation and path of a ball. Amateur players scarcely understand the subject at all, and no doubt the habitual strength with which they play in a great measure destroys or smothers the effect of the nap, which tells more when the execution is delicate. There is also another reason why they are ignorant of its effect, which is that markers, to please the great majority of their patrons, smooth and iron away the nap in order to make the table faster. By this means they ruin it for the very few who can play, for without plenty of nap the slow screws and gentle side strokes will not tell, the ball, so to speak, cannot obtain a bite or grip on the cloth, and the result is that strokes which should be played softly, and from which the position of the balls can be foreseen with some accuracy, have to be forced, and an ignorant hard hitter may on such a cloth defeat a player of a much higher class. Thus the common fault of amateurs, in attempting by strength results which should be effected by skill, prevents them from acquiring a practical knowledge of the use of nap, which is consequently sacrificed, to the detriment of the game. It is scarcely an exaggeration to say that there are but few tables in London clubs the cloths of which are in fit condition for play.
Now, though the professional scarcely understands better than the amateur why the game can be more scientifically played on a cloth with nap, yet from practice, and because of his habitually gentler touch, he prefers a slower table and a cloth with proper nap. For all serious matches a new cloth is used; and in some cases when the game is very long, extending for two weeks, a condition is made that one player shall supply the cloth for one week and the other for the next. Of course there is a limit to the amount of nap which is desirable; it is quite possible to have a cloth which is too coarse and rough, but the usual mistake is the other way. Persons are apt to think that the more friction is reduced the better; but it is not so, and even an average club amateur would find if he tried to play on glass or ice how impossible many ordinary strokes would become.
In a general way, in very delicate strokes side should be reversed when playing against the nap. Many examples can be shown, and a good professional will easily set them up on the table. One may be mentioned here, as it affords an excellent illustration of the general principle. If ball 1 be in baulk, almost touching the left cushion, and it be desired to run a coup in the left top pocket, a gentle stroke with side next the cushion, or left side, will cause the ball to hug the cushion and fall into the pocket. But reverse the stroke, play from the top of the table down the same cushion; if cushion side, or right side, be used, the ball will run fairly straight as long as the forward force (translation) overcomes or neutralises the side; but whenever the latter can assert its power the ball will show a distinct tendency to leave the cushion altogether. It will even strike the bottom cushion 6 in. away from the side cushion, and return towards the latter by reason of the side. Play the same stroke with left side—i.e. side away from the cushion—and as soon as the side tells the ball will most distinctly hug the cushion, and if repelled from it will endeavour to return again. At present the full effect of playing with or against the nap is neither understood nor practised, but it has attracted attention, and the more skilful and thoughtful players are studying and utilising its effects. It is sufficient here to notice a refinement of play from which considerable development may confidently be expected.
Fig. 8
Many diagrams are unnecessary for this chapter, which is rather an essay or series of suggestions on matters connected with rotation than part of a manual of billiards; examples of following, side, and screw strokes will be dealt with in the next and subsequent chapters. Still, practice is useful at this stage, and some strokes are accordingly indicated. The opening stroke of a game may be taken as the first example. Place ball 1 in baulk on or close to the baulk-line A B and at a convenient distance to reach, say, the centre spot, or, perhaps better still, an inch or so beyond it, in order to avoid playing from a spot which, however thin, must on a new cloth, at any rate, be raised above the general level. If the player stands at A, he should strike ball 1 with right side and strength sufficient to take it to the cushion above B and back as nearly as possible to the central longitudinal line of the table, or below the centre baulk-spot, thereby securing a good position, marked P, and making his opponent’s next stroke, also usually a miss, as difficult as possible. If played from B, left side must be used, and the stroke must be practised till complete confidence as to angle and strength is acquired. Then marks should be set up at C, D, E, F, and each stroke practised till ball 1 can be brought with fair accuracy to follow the lines B C, B D, B E, and B F, which, as is seen from the figure, will result in a coup in the left bottom pocket. At first this is about the maximum of side a beginner can command, but after some practice he will succeed in striking the bottom cushion near G, a stroke which is useful when a ball is left over the pocket, as a losing hazard may be made with sufficient strength to bring ball 2 out of baulk. These strokes should be played from B as well till some certainty is acquired. They are very useful for disturbing a double baulk, and even for scoring from one, and a good break so made has a somewhat disconcerting effect on the adversary.