I explained humbly that I had been to the schoolmaster to get something to read, and produced my dingy red volumes. At that his brow cleared. I could see that his suspicions were set at rest. We left Colonsay about six in the evening with the sky behind us banking for a storm, and the hills of Jura to starboard an angry purple. Colonsay was too low an island to be any kind of breakwater against a western gale, so the weather was bad from the start. Our course was north by east, and when we had passed the butt-end of the island we nosed about in the trough of big seas, shipping tons of water and rolling like a buffalo. I know as much about boats as about Egyptian hieroglyphics, but even my landsman's eyes could tell that we were in for a rough night. I was determined not to get queasy agai