1. If the elder-hand be dissatisfied with his cards, he proposes to
exchange them in whole or in part, by saying, I discard, or I propose,
or if you please, or any other equivalent phrase. If the second player
be also dissatisfied with his hand, he accedes to the proposal by
saying, How many? He then gives the elder hand as many cards as he
demands, and afterwards takes as many as he wants himself to the full
number of the whole hand, five cards each, if requisite.