Games and Sports
As all Billiard balls are made of ivory, and as in every mass of that substance there are always some parts more solid than others, there is not a single ball perhaps which has the centre of gravity exactly in the centre of the figure. On this account, every ball deviates more or less from the line in which it is impelled, when as light motion is communicated to it, in order to make it proceed towards the other side of the billiard table, unless it should happen that the heaviest part is placed at the top or bottom. An eminent maker of these balls declares that he has never been able to find one ball perfectly free from the fault now described.