This, a most useful preparation, consists merely in having one or more cards in the pack a shade longer or broader than the others. I, myself, never use more than one card so prepared. When not forced, or otherwise actually in use itself, it is very useful to place over or beneath other chosen cards, which will, by its means, be easily found when wanted. My preference is in favour of a broad card, as opposed to a long one: it is more easily found by the finger when preparing to make the pass. As one cannot procure single cards longer or broader than others, it will be necessary to have the other cards shaved down a little, omitting, of course, those intended to be longer or broader than the rest. It is not necessary to go to a card manufacturer in order to have these operations of cutting and shaving performed; any stationer or card-plate engraver, who possesses a paper-cutting machine, will be able to do all that is desired.