"You mean," replied his governess, laughing, "that they are not _historical_ trees; but they are certainly very fine ones. There is another species of elm, the English, which is often seen in this country too. It is a very large and stately tree, but not so graceful as our own elm. It is distinguished from the American elm by its bark, which is darker and much more broken; by having one principal stem, which soars upward to a great height; and by its branches, which are thrown out more boldly and abruptly and at a larger angle. Its limbs stretch out horizontally or tend upward with an appearance of strength to the very extremity; in the American elm they are almost universally drooping at the end. Its leaves are closer, smaller, more numerous and of a darker color. In England this tree is a great favorite with those black and solemn birds the rooks. The poet Hood writes of it as