To demonstrate this take the case just given. There are seven parcels and five cards over. First, this proves that there are 47 cards in the seven parcels made up of pips and cards. Secondly, subtract the number of pip cards--seven from the number of cards in the parcels; then, 7 from 47, 40 remain (cards). Thirdly, now, as the seven parcels are made up both of the pip cards and cards, it is evident that we have only to find the number of cards got at as above, to get the number of pips required. Thus, there being seven packets, 7 times 12 make 84; take 40, as above found (the number of cards), and the remainder is 44, the number of pips as found by the first method explained,--the process being as follows:-- 52 - 5 = 47 - 7 = 40. Then, 7 X 12 = 84 - 40 = 44. In general, however, the first method, being the easiest of performance, should be adopted. The second is in many respects very objectionable. 18. To get a card into a pack firmly held by a party. This trick strikingly shows how easily we may all be deceived by appearances. Select the five or seven of any suit, say the seven of hearts, and handing the remainder of the pack to a party, show him the card, with your thumb on the seventh pip, so as to conceal it, saying:--'Now, hold the pack as firmly as you can, and keep your eye upon it to see that there is no trickery, and yet I undertake to get into it this six of hearts.' This injunction rivets his attention, and doubtless, like other wise people destined to be deceived, he feels quite sure that nobody can 'take him in.' In this satisfactory condition for the operation on both sides, you flourish the card so as just to reach the level of the top of your hat (if you wear an Alpine scolloped, so much the better), and then, bringing down the card, rapidly strike it on the pack twice, uttering the words one, two, at each stroke; but, on the third raising of the card, leave it on the top of your hat, striking the pack with your hand--with the word three. Then request the party to look for the six of hearts in the pack, and he will surely find it, to his amazement. This trick may be performed in a drawing-room, if the operator be seated, dropping the card behind his back, especially in an easy-chair.