If Ross had believed that his pre-trial-run cramming had been a rigorous business, he was soon to laugh at that estimation. Since the burden of the next jump would rest on only three of them--Ashe, McNeil, and himself--they were plunged into a whirlwind of instruction, until Ross, dazed and too tired to sleep on the third night, believed that he was more completely bewildered than indoctrinated. He said as much sourly to McNeil. "Base has pulled back three other teams," McNeil replied. "But the men have to go to school again, and they won't be ready to come on for maybe three, four weeks. To change runs means unlearning stuff as well as learning it----" "What about new men?" "Don't think Kelgarries isn't out now beating the bushes for some! Only, we have to be fitted to the physical type we are supposed to represent. For instance, set a small, dark-headed pugnose among your Norse sea rovers, and he's going to be noticed--maybe remembered too well. We can't afford to take that chance. So Kelgarries had to discover men who not only look the part but are also temperamentally fitted for this job. You can't plant a fellow who thinks as a seaman--not a seaman, you understand, but one whose mind works in that pattern--among a wandering tribe of cattle herders. The protection for the man and the project lies in his being fitted into the right spot at the right time." Ross had never really thought of that point before. Now he realized that he and Ashe and McNeil were of a common mold. All about the same height, they shared brown hair and light eyes--Ashe's blue, his own gray, and McNeil's hazel--and they were of similar build, small-boned, lean, and quick-moving. He had not seen any of the true Beakermen except on the films. But now, recalling those, he could see that the three time traders were of the same general physical type as the far-roving people they used as a cover. It was on the morning of the fifth day while the three were studying a map Webb had produced that Kelgarries, followed at his own weighty pace by Millaird, burst in upon them. "We have it! This time _we_ have the luck! The Reds slipped. Oh, how they slipped!" Webb watched the major, a thin little smile pulling at his pursed mouth. "Miracles sometimes do happen," he remarked. "I suppose the sub has a fix for us." Kelgarries passed over the flimsy strip of paper he had been waving as a banner of triumph. Webb read the notation on it and bent over the map, making a mark with one of those needle-sharp pencils which seemed to grow in his breast pocket, ready for use. Then he made a second mark. "Well, it narrows it a bit," he conceded. Ashe looked in turn and laughed. "I would like to hear your definition of 'narrow' sometime, Miles. Remember we have to cover this on foot, and a difference of twenty miles can mean a lot." "That mark is quite a bit in from the sea." McNeil offered his own protest when he saw the marking. "We don't know that country--"