As this point is hidden in the inside of the hand, the Greek can, at any moment, mark the cards he pleases, with an almost imperceptible spot, before the very eyes of his adversary.
These spots can, as I have before explained, by the manner in which they are placed, mark particular cards.
Fig. 24.
The Greek also makes use of this instrument to cheat at dominoes.
For this purpose, the ring is a very massive one, and the point alluded to is made of steel, and very sharp.
It is easy to understand, that when the Greek has the dominoes in his hands, in moving them about on the table, he can put a mark on them, so as to know them again.
The point of the ring, fine as it is, is blunted, so that the marks it makes are so light and shining, as to awaken no suspicion, and it is only to the eyes of the sharper, who has made them, that they are visible.