Even in the modern world, so closely organized, so completely explored and so prodigiously policed, those enigmas continue to pile up. In our day it is an axiom that nothing is harder to lose sight of than a ship at sea or a man on land. This sounds, at first blush, like a paradox. It ought, surely, to be easy to scrape the name from a vessel, change her gear and peculiarities a little, paint a fresh word upon her side and so conceal her. Simpler still, why can’t any man, not too conspicuous or individual, step out of the crowd, alter the cut of his hair and clothes, assume another name and immediately be draped in a fresh ego? Does it not take a huge annual expenditure for ship registry and all sorts of marine policing on the one side, and an even greater sum for the land police, on the other, to prevent such things? Truly enough, and it is the police power of the earth, backed by certain plain or obscure motivations in mankind, that makes it next to impossible for a ship or a man to drop out of sight, as the phrase goes. Leaving aside the ships, which are a small part of our argument, we may note that, for all the difficulty, thousands of human beings try to vanish every year. Plainly there are many circumstances, many crises in the lives of men, women and children, that make a complete detachment and forgottenness desirable, nay, imperative. Yet, of the twenty-five thousand persons reported missing to the police of the City of New York every year, to take an instance, only a few remain permanently undiscovered. Most are mere stayouts or young runaways and are returned to their inquiring relatives within a few hours or days. Others are deserting spouses--husbands who have wearied or wives who have found new loves. These sometimes lead long chases before they are reported and identified, at which time the police have no more to do with the matter unless there is action from the domestic courts. A number are suicides, whose bodies soon or late rise from the city-engirdling waters and are, almost without fail, identified by the marvelously efficient police detectives in charge of the morgues. Some are pretended amnesics and a few are true ones. But in the end the police of the cities clear up nearly all these cases. For instance, in the year 1924, the New York police department had on its books only one male and one female uncleared case originating in the year of 1918, or six years earlier. At the same time there were four male and six female cases dating from 1919, three male and one female cases that had originated in 1920, no male and three female cases that originated in 1921, three male and two female cases of the date of 1922, but in 1924 there were still pending, as the police say, twenty-eight male and sixty-three female cases of the year preceding, 1923.