In my book “The North Pole” appeared a brief résumé, or synopsis, of my system of arctic exploration, which was the evolution of years of continuous practical work and experience in extreme high latitudes, wherein everything that could be thought of in the way of perfecting arctic methods and equipment was worked out. Ideas that in the mind or on paper appeared promising were tested relentlessly under the most hostile conditions. Those that failed under the test were abandoned, and those that gave evidence of containing some meat were perfected, until at last the entire subject of perfected equipment and methods, combined with the thorough knowledge of all conditions to be encountered gained through years of experience, compelled success. This was the résumé: The so-called “Peary System” is too complex to be covered in a paragraph, and involves too many technical details to be outlined fully in any popular narrative. But the main points of it are about as follows: To drive a ship through the ice to the farthest possible northern land base from which she can be driven back again the following year. To do enough hunting during the fall and winter to keep the party healthily supplied with fresh meat. To have dogs enough to allow for the loss of sixty per cent of them by death or otherwise. To have the confidence of a large number of Eskimos, earned by square dealing and generous gifts in the past, so that they will follow the leader to any point he may specify. To have an intelligent and willing body of civilized assistants to lead the various divisions of Eskimos—men whose authority the Eskimos will accept when delegated by the leader. To transport beforehand to the point where the expedition leaves the land for the sledge journey, sufficient food, fuel, clothing, stoves (oil or alcohol) and other mechanical equipment to get the main party to the Pole and back and the various divisions to their farthest north and back. To have an ample supply of the best kind of sledges. To have a sufficient number of divisions, or relay parties, each under the leadership of a competent assistant, to send back at appropriate and carefully calculated stages along the upward journey. To have every item of equipment of the quality best suited to the purpose, thoroughly tested, and of the lightest possible weight. To know, by long experience, the best way to cross wide leads of open water. To return by the same route followed on the upward march, using the beaten trail and the already constructed igloos to save the time and strength that would have been expended in constructing new igloos and in trail breaking. To know exactly to what extent each man and dog may be worked without injury. To know the physical and mental capabilities of every assistant and Eskimo. Last, but not least, to have the absolute confidence of every member of the party, white, black, or brown, so that every order of the leader will be implicitly obeyed. In “Secrets of Polar Travel” it is the intention to enlarge upon the above synopsis and to give the reader and the present and future polar traveler many details of serious polar work that it was impossible to embody in my former popular narratives without crowding out other and, as it seemed, more important matters.