15.--If a player have a hand dealt him without king, queen or knave, he may
declare _carte blanche_ before playing a card. Carte blanche must be shown
by counting the cards, one by one, face upward, on the table.
16.--If, after playing a card, a player who has declared carte blanche draw
a card other than king, queen or knave, he is entitled to declare another
carte blanche on showing the card drawn to his adversary; and so on after
every card drawn, until he draws a king, queen or knave.