Place Publication beneath a Species card until it is discarded. If the Species card is moved, Publication moves with it. At the end of the game, double the points indicated in the Species card on top. However, points gained from this card in any other way are not doubled. If two Publication cards are played beneath the same Species card, each one sums the points indicated in the card to the total score, i.e., the points are tripled, not quadrupled.