“A five-dollar gold piece.”

“Now, if you please, silver.”

“I see two dollars in silver.”

“Likewise, if you please, the copper?”

“Five cents.”

“All right.”

The code for playing cards should be formed in much the same way. The following is a suggestion of what might be arranged:—

The cards, commencing with the ace and finishing with the king, should be numbered one to thirteen inclusive. The suits can then be distinguished thus:—

Good = hearts; very good = diamonds; well = clubs; very well = spades.

Supposing that the Professor has handed a pack of cards to some person among the spectators, who has drawn the knave of clubs.