"Maybe we can learn some things from you, too," he said. "So you fought in the First World War. Do you know, we have very little left in the way of records of the details of that war, that is, the precise conditions under which it was fought, and the tactics employed. We forgot many things during the Han terror, and--well, I think you might have a lot of ideas worth thinking over for our raid masters. By the way, now that you're here, and can't go back to your own century, so to speak, what do you want to do? You're welcome to become one of us. Or perhaps you'd just like to visit with us for a while, and then look around among the other gangs. Maybe you'd like some of the others better. Don't make up your mind now. We'll put you down as an exchange for a while. Let's see. You and Bill Hearn ought to get along well together. He's Camp Boss of Number 34 when he isn't acting as Raid Boss or Scout Boss. There's a vacancy in his camp. Stay with him and think things over as long as you want to. As soon as you make up your mind to anything, let me know." We all shook hands, for that was one custom that had not died out in five hundred years, and I set out with Bill Hearn. Bill, like all the others, was clad in green. He was a big man. That is, he was about my own height, five feet eleven. This was considerably above the average now, for the race had lost something in stature, it seemed, through the vicissitudes of five centuries. Most of the women were a bit below five feet, and the men only a trifle above this height. For a period of two weeks Bill was to confine himself to camp duties, so I had a good chance to familiarize myself with the community life. It was not easy. There were so many marvels to absorb. I never ceased to wonder at the strange combination of rustic social life and feverish industrial activity. At least, it was strange to me. For in my experience, industrial development meant crowded cities, tenements, paved streets, profusion of vehicles, noise, hurrying men and women with strained or dull faces, vast structures and ornate public works.