one of the first steps of its naval department was to form a torpedo section to protect approaches to places liable to attack by the Northern fleet. Such energy and ingenuity was shown by this branch of the department, and so little was at first understood of this new mode of warfare by the enemy, that a number of his vessels were sunk by submarine mines. From henceforth it was evident this weapon could not be despised with impunity.
Of course, these mines, being moored or placed on the bottom, only acted if the ship came into their vicinity; and if not covered by guns bearing on the area they protected, could be fished for or destroyed by boats before the vessels advanced. A further development, therefore, was made in taking the mine to the hostile ship by means of a boat. A charge of powder was placed at the end of a long pole, carried in the bows of the boat, which under cover of darkness then sought its victim. On arriving alongside the ship the pole and charge were immersed and the explosive ignited by an electric wire when in contact with the bottom of the vessel. In the confusion that followed the assailant had a fair chance of escape. A most daring gallant, and successful attack was thus made on the Confederate ship 'Albemarle,' by an officer of the Northern navy named Gushing, in a small steamboat. At the moment of the explosion his own craft sank, but he escaped by swimming, and returned unhurt with the news.
This method of attack then came into favour, but so
