To this very reasonable request, which was in line with my obvious duties, no objection could be made and a conference was at once called of submarine captains and furloughed engineers who had been in the Arctic ore fields. I was impressed by the youthfulness of these men, which was readily explained by the fact that one vessel out of every five sent out was lost beneath the Arctic ice floes. With an almost mathematical certainty the men in the undersea service could reckon the years of their lives on the fingers of one hand. Although the official business of the conference related to ore deposits and not to the dangers of the traffic, the men were so obsessed with the latter fact, that it crept out in their talk in spite of the Admiral's obvious displeasure at such confession of fear. I particularly marked the outspoken frankness of one, Captain Grauble, whose vessel was the next one scheduled to depart to the mines. I therefore asked Grauble to call in person at my office for the instructions concerning the ore investigations which were to be forwarded to the Director of the Mines. Free from the restraining influence of the Admiral, I was able to lead the Captain to talk freely of the dangers of his work, and was overjoyed to find him frankly rebellious. That I might still further cultivate his acquaintance I withheld some of the necessary documents; and, using this as a pretext, I later sought him out at his quarters, which were in a remote and somewhat obscure part of the Royal Level. The official nature of my call disposed of, I led the conversation into social matters, and found no difficulty in persuading the Captain to talk of his own life. He was a man well under thirty and like most of his fellows in the service was one of the sons of a branch of the Hohenzollern family whose declining fortune denied him all hope of marriage or social life. In the heroic years of his youth he had volunteered for the submarine service. But now he confessed that he regretted the act, for he realized that his death could not be long postponed. He had made his three trips as commander of an ore-bringing vessel. "I have two more trips," declared Captain Grauble. "Such is the prophecy of statistical facts: five trips is the allotted life of a Captain; it is the law of averages. It is possible that I may extend that number a little, but if so it will be an exception. Trusting to exceptions is a poor philosophy. I do not like it. Sometimes I think I shall refuse to go. Disgrace, of course,--banishment to the mines. Report my treasonable utterances if you like. I am prepared for that; suicide is easy and certain." "But is it not rather cowardly, Captain?" I asked, looking him steadily in the eye.