I then asked him to note particularly and to record the pressure on a certain gauge. The run lasted about five minutes and, on turning to him for his notes, he himself was surprised that he had been so confounded by the noise that he had not thought of looking at the gauge at all. On the day when the final test took place, the firm of torpedo-builders that was interested with me in the apparatus sent several representatives, including their chief engineer, vice-president and other officers of the company, to witness the test. Everything being in readiness, and each member of the committee being convinced that there was no possible danger in remaining in proximity to the apparatus and back of the barricade, while it was being tested, I gave each of the committee explicit instructions to watch the various gauges and to note the pressures, while the chief engineer and myself were to watch the nozzle gauge, and to observe the character and force of the steam and gases escaping from the nozzle. I told the several members of the committee it was indispensable that they should carefully watch the pressure gauges during the entire run. As it was a condition of the test that I should get up steam within ten seconds, the chief engineer stood ready with his stop-watch when the electric button was pressed to ignite the motorite. As the action was instantaneous, that is to say, as steam was got up practically instantaneously and was escaping at the nozzle under full head as quickly as a gun could be fired, he did not think of his stop-watch, and it was some little time before I could get him to look at the pressure gauge on the nozzle, so as to observe the character of the escaping steam. His eyes had a blank, meaningless look, but it must be confessed that he had the grit to stand there. Not so, however, with the other members of the committee. Each of them was far more interested in his own individual run than he was in the run of the apparatus, for not one of them was in sight when the run was completed. They came straggling back sheepishly, but no urging sufficed to bring them near the apparatus during any of the succeeding runs. THE MULE GUN In the old days when the Indians were sometimes troublesome on the Western frontier, an officer in the regular army, who was rather an ingenious fellow, conceived the idea of making a mountain gun out of a mule and the barrel of a common field-piece, using the mule for the carriage. He therefore had the gun securely mounted on the back of the beast. They had not proceeded far with this novel battery, when a small knot of hostile savages was espied quietly eating their midday meal within easy range. The mounted gun was forthwith loaded heavily with grape and canister, the mule taken by the head and pointed in the direction of the Indians. A short piece of fuze that had been placed in the touch-hole of the gun was ignited.