"You must realize," squealed the squat, ugly creature in the hastily constructed wooden cage, "that you're inviting certain destruction by holding me prisoner. I warn you, your time is short." Walt Granger stomped over to the enclosure and swung a heavy boot against one of the two-by-fours that stood like a crooked row of sentries. "That's my worry," he grunted. He had stumbled upon the whole business just two hours before, right in the middle of his part of the geoglogic survey that was going o