ed, so Uncle John said; though, the boys had imagined that they must take at least two complete suits. He showed them that two flannel shirts worn at the same time, one over the other, would be as warm as one shirt and a coat, and that if their clothing became wet, it could be easily dried. "Flannel and the compass are the two things that are indispensable to navigation," said Uncle John: "if flannel shirts had not been invented, Columbus would never have crossed the Atlantic." Perhaps there was a little exaggeration in this; but when we remember that flannel is the only material that is warm in cold weather and cool in hot weather, and that dries almost as soon as it is wrung out and hung in the wind, it is difficult to see how sailors could do without it.
The boys agreed very readily to take with them only what Uncle John advised. Tom Schuyler, however, was very anxious to take a heavy iron vise, which he said could be screwed on the gunwale of the boat, and might prove to be very useful, al-
