The Raven Stone.—In Germany a superstition prevails that if the eggs are taken from a raven's nest, boiled, and replaced, the old raven will bring a root or stone to the nest, which he fetches from the sea. This "raven stone" confers great fortune on its owner, and has the power of rendering him invisible when worn on the arm. The stone is said to make the nest itself invisible; it must be sought with the aid of a mirror. In Pomerania and Rügen the method is somewhat different. The parent birds must have attained the age of one hundred years, and the would-be possessor of the precious "stone" must climb up and kill one of the young ravens. Then the aggressor descends, taking careful note of the tree. The old raven immediately returns with the stone, which he puts in the dead bird's beak, and thereupon both tree and nest become invisible. The man, however, feels for the tree, and on reaching the nest, he carries off the stone in triumph. The Swabian peasantry maintain that young ravens are nourished solely by the dew from heaven during the first nine days of their existence. As they are naked, and of a light color, the old birds do not believe that they are their progeny, and consequently neglect to feed them; but they occasionally cast a glance at the nest, and when the young ones begin to show a little black down on their breasts, by the tenth day, the parents bring them the first carrion.