The Hydra--the torrent which, cut off in one direction, makes many headways in others--has its survivals in the many diabolical names assigned to boiling springs and to torrents that become dangerously swollen. In California the boiling springs called 'Devil's Tea-kettle' and 'Devil's Mush-pot' repeat the 'Devil's Punch-bowls' of Europe, and the innumerable Devil's Dikes and Ditches. St. Gerard's Hill, near Pesth, on which the saint suffered martyrdom, is believed to be crowded with devils whenever an inundation threatens the city; they indulge in fiendish laughter, and play with the telescopes of the observatory, so that they who look through them afterwards see only devils' and witches' dances! [86] At Buda, across the river from Pesth, is the famous 'Devil's Ditch,' which the inhabitants use as a sewer while it is dry, making it a Gehenna to poison them with stenches, but which often becomes a devastating torrent when thaw comes on the Blocksberg. In 1874 the inhabitants vaulted it over to keep away the normal stench, but the Hydra-head so lopped off grew again, and in July 1875 swallowed up a hundred people. [87] The once perilous Strudel and Wirbel of the Danube are haunted by diabolical legends. From Dr. William Beattie's admirable work on 'The Danube' I quote the following passages:--'After descending the Greinerschwall, or rapids of Grein above mentioned, the river rolls on for a considerable space, in a deep and almost tranquil volume, which, by contrast with the approaching turmoil, gives increased effect to its wild, stormy, and romantic features. At first a hollow, subdued roar, like that of distant thunder, strikes the ear and rouses the traveller's attention. This increases every second, and the stir and activity which now prevail among the hands on board show that additional force, vigilance, and caution are to be employed in the use of the helm and oars. The water is now changed in its colour--chafed into foam, and agitated like a seething cauldron. In front, and in the centre of the channel, rises an abrupt, isolated, and colossal rock, fringed with wood, and crested with a mouldering tower, on the summit of which is planted a lofty cross, to which in the moment of danger the ancient boatmen were wont to address their prayers for deliverance. The first sight of this used to create no little excitement and apprehension on board; the master ordered strict silence to be observed, the steersman grasped the helm with a firmer hand, the passengers moved aside, so as to leave free space for the boatmen, while the women and children were hurried into the cabin, there to await, with feelings of no little anxiety, the result of the enterprise. Every boatman, with his head uncovered, muttered a prayer to his patron saint; and away dashed the barge through the tumbling breakers, that seemed as if hurrying it on to inevitable destruction. All these preparations, joined by the