I got well away from stragglers and took out my mirroscope, pointing if off in the distance and swinging the objective lens around until it centered on them. I was lucky. They were facing in my direction. "It isn't a cemetery," Herb was saying with emphatic motions of his hands. "It was a parking area, and this stone was where I parked my airsled. I can remember it as though it were yesterday." [Illustration: _If this was a cemetery, the old Martians should have been here. But there were no voices--no bones._] I had to admire the man's subconscious. It was a remarkably shrewd guess. The experts wouldn't play along with it, but they would probably never be able to prove him wrong on that count. But Dotty was arguing with him. "How can you prove it was a parking area?" Her eyes roamed over the large field with its regularly spaced stones. "It certainly looks impractical for a parking lot." "Just the same, that's what it was. I wish I had a shovel here. I seem to remember burying something near my stone. If I could find that it would prove I really remember." "Why don't you forget it?" Dotty pleaded. "After all, even if it were true, what does it matter _now_?" "It matters to me. Ever since we arrived here I've seen familiar things. Too familiar to be coincidence. I never felt this way before. I always considered reincarnation as ancient superstitious belief, just like everyone else. But not any more. I _know_. I lived here when all this was new." "But can't you just be satisfied to feel that you did and let it go at that?" Dotty asked. "I'm afraid of what they would do to you if they found out what you're thinking." "Hah!" Herb snorted. "I have a feeling that before we leave Mars I'll be able to prove it to them. Somewhere in this city is something that only I know exists. It's hidden under stones that haven't been disturbed since man first set foot on the planet. It isn't entirely clear yet, but it will come--it will come. Then I'll make them listen. They'll dig, and they'll find what I say is there. You wait and see." "They'll lock you up, darling," Dotty said. "They won't believe you." The guide was calling everyone back to the bus. I watched Herb scowl fiercely at the stone marker that he believed to have been his, open his mouth to say something, then turn away so that his lips were out of sight. Regretfully I put the mirroscope away and went back to the bus. * * * * * I knew where we were going next, and I was uneasy about it. Herb and Dotty managed to sit together and I got a place right behind them where I could eavesdrop. But they sat in silence.