"A mastodon," I said. "And there's a woolly rhino, and an ugly-looking critter that must be a sabre-tooth. This book is _old_...." "A lifetime of rummaging wouldn't exhaust the treasures aboard this ship," said Foster. "How about bones? Did you find any more?" Foster nodded. "There was a disaster of some sort. Perhaps disease. None of the bones was broken." "I can't figure the one in the lifeboat," I said. "Why was he wearing a necklace of bear's teeth?" I sat down across from Foster. "We've got plenty of mysteries to solve, all right, but there are some other items we'd better talk about. For instance: where's the kitchen? I'm getting hungry." Foster handed me a black rod from among several that lay on the table. "I think this may be important," he said. "What is it, a chop stick?" "Touch it to your head, above the ear." "What does it do--give you a massage?" I pressed it to my temple.... _I was in a grey-walled room, facing a towering surface of ribbed metal. I reached out, placed my hands over the proper perforations. The housings opened. For apparent malfunction in the quaternary field amplifiers, I knew, auto-inspection circuit override was necessary before activation_---- I blinked, looked around at the yellow table, and piled books, the rod in my hand. "I was in some kind of powerhouse," I said. "There was something wrong with--with...." "The quaternary field amplifiers," Foster said. "I seemed to be right there," I said. "I understood exactly what it was all about." "These are technical manuals," Foster said. "They'll tell us everything we need to know about the ship." "I was thinking about what I was getting ready to do," I said, "the way you do when you're starting into a job; I was trouble-shooting the quaternary whatzits--and I knew how...!" Foster got to his feet and moved toward the doorway. "We'll have to start at one end of the library and work our way through," he said. "It will take us a while, but we'll get the facts we need. Then we can plan." * * * * * Foster picked a handful of briefing rods from the racks in the comfortably furnished library and started in. The first thing we needed was a clue as to where to look for food and beds, or for operating instructions for the ship itself. I hoped we might find the equivalent of a library card-catalog; then we could put our hands on what we wanted in a hurry. I went to the far end of the first rack and spotted a short row of red rods that stood out vividly among the black ones. I took one out, thought it over, decided it was unlikely that it was any more dangerous than the others, and put it against my temple.... _As the bells rang, I applied neuro-vascular tension, suppressed cortical areas upsilon-zeta and iota, and stood by for_----