CHAPTER 4 For several days things went along in about the same course. I took our position every morning with my crude sextant; but the results were always most unsatisfactory. They always showed a considerable westing when I knew that we had been sailing due north. I blamed my crude instrument, and kept on. Then one afternoon the girl came to me. "Pardon me," she said, "but were I you, I should watch this man Benson—especially when he is in charge." I asked her what she meant, thinking I could see the influence of von Schoenvorts raising a suspicion against one of my most trusted men. "If you will note the boat's course a half-hour after Benson goes on duty," she said, "you will know what I mean, and you will understand why he prefers a night watch. Possibly, too, you will understand s