“The only attempt that was made in the late American war to bring the electrical torpedo into play on the land was made by the Confederates at Fort Fisher, in 1865, just before its fall. The narrow landspit over which the attacking party had to advance was mined. The officer in charge used the magneto exploder. But the mines would not go off, owing no doubt to defective arrangement, for the instrument was new to him, and he had not been posted up as to the virtues of the ladder-circuit. The instrument used on this occasion was just such a one as this before you. It was the first that had reached the Confederacy. Here is then a most striking illustration of the importance of previous study and drill in this new and important arm of defense”. In addition to Wurttemberg, Maury offered this instruction in electric mining to her enemy Prussia, and also to the Governor General of Canada for the sum of 1000 pounds sterling. These offers were not accepted. His experiments had, however, been made known in this way to a number of different governments, later information concerning his discoveries leaked out through his agent in London to other countries, and finally his system became so generally known that his particular contributions to the development of this weapon of warfare were lost sight of, and as a consequence Maury has not been given the credit that is justly due him in histories of the electric mine. The money which Maury received from these demonstrations of mines came at a time when it was greatly needed, for he had lost practically all his property in the United States through the war and after his last arrival in England he had had the further misfortune to lose, through the failure of a banker, all he had brought from Mexico. At about this time, however, assistance came to him from another source. Indeed, before his departure from England near the end of the war, a “Maury Testimonial” had been begun at the instigation of some of his English friends, especially the Reverend Dr. Tremlett, and by Commodore Jansen. While Maury was in Mexico, these friends solicited funds for him both in England and on the Continent, Tremlett even taking the trouble of traveling through Sweden, Denmark, and Russia for that purpose. A few months after Maury’s return to England this sum had reached the total of 3000 guineas. Holland contributed 1100 pounds, the Grand Duke Constantine gave privately 1000 pounds, and naval officers, scientists, and friends of Maury in England and elsewhere on the Continent subscribed the remainder.