PIG  . 2.—I,

Fruit of Carya alba; 2, Ilickocy Nut; 3, Cross Section of Nut; 4, Vertical Section of the Seed . hickory nuts of the American markets are the produce of C. alba, called the shell-hark hickory because of the roughness of its bark, which becomes loosened from the trunk in long scales bending outwards at the extremities and adhering only by the middle . The nuts are much esteemed in all parts of the States, and are exported in considerable quantities to Europe . The pecan-nuts, which come from the Western States, are from 1 in. to II- in. laiig, smooth, cylindrical, pointed at the ends and thin-shelled, with the kernels full, not like those of most of the hickories divided by partitions, and of delicate and agreeable flavour . The thick-shelled fruits of the pig-nut are generally left on the ground for swine, squirrels, &c., to devour . In C. amara the kernel is so bitter that even squirrels refuse to eat it .