Dunderberg, “Thunder Mountain,” at the southern gate of the Hudson Highlands, is a wooded eminence, chiefly populated by a crew of imps of stout circumference, whose leader, the Heer, is a bulbous goblin clad in the dress worn by Dutch colonists two centuries ago, and carrying a speaking-trumpet, through which he bawls his orders for the blowing of winds and the touching off of lightnings. These orders are given in Low Dutch, and are put into execution by the imps aforesaid, who troop into the air and tumble about in the mist, sometimes smiting the flag or topsail of a ship to ribbons, or laying the vessel over before the wind until she is in peril of going on beam ends.