Four marvelous essays on four plants, all with the common theme of how well each has manipulated humans for its benefit. The plants are: the apple, the tulip, the potato, and marijuana. Pollan's writing is beautiful, and the apple essay alone -- you'll never think of Johnny Appleseed in the same way! -- is as satisfying an essay as we've read in a long time. Two of these pieces (potato, marijuana) were originally published in the New York Times Magazine.  (NAT56, $15.00)