It was at that instant the horror descended on the _Orion_. There was a screaming cacophonous whirlwind of sound, a shriek of metal parting, flames suddenly bursting into full bloom, and the thin voices of men and women in mortal fear. Above all there was a _whooshing_ noise, as though a giant hand was gripping them. Finster and Allerdyce felt themselves lifted from the depths of the ship and plunged into a maelstrom of storm in space. For a full ten seconds Algernon Allerdyce looked into the face of terror beyond words, then unconsciousness descended on him.... * * * * * The air was hot and damp and the slight breeze which fanned his cheek was of little solace. Allerdyce turned his head from side to side; a quiver stirred the heavy frame of his body, and awareness came in a rush to him as he opened his eyes. He sat erect and looked about him. A figure lay sprawled on the ground some ten feet away. It was that of a man and one glance showed Allerdyce that the man was Ed Finster and that he was alive, though not yet conscious. Allerdyce rose to his feet and grunted at the effort. It seemed as if every bone and muscle creaked and groaned in protest. Awe and amazement made his brows lift and his eyes widen as he looked about. The two men had fallen among some ferns in a shallow glade bound about by dense jungle growth. Allerdyce caught a glimpse of hills in the near distance. Then he saw Finster stir and he stepped to the other's side. "Wha-what happened?" Finster asked while he turned his head from one side to the other. "I don't know exactly," Allerdyce replied in a low voice. "But I'm going to make a guess, fantastic as it may sound. I think we fell or were sucked into a space fault. From the looks of this jungle and from the feel of the atmosphere, I'll bet we've landed in a time long before the dawn of men such as we know...." And as though in corroboration there came to their ears a low, grunting sound. Instantly Finster leaped to his feet and jumped the several feet to the side of the other. The sharp movement brought another coughing grunt, this time from the opposite side. And as they watched, a huge striped shape stepped into the open from the depths of the thick jungle growth. It was fully ten feet long and high as their shoulders, and the head of it was that of a tiger but such as they had never seen, for twin tusks, a foot long protruded down the length of the jowls.... "A saber tooth!" Allerdyce whispered hoarsely. Ed Finster could only stare in open-mouthed horror at the thing. His muscled jaws began to quiver as the tiger began a sinuous advance toward them, and then, as the animal suddenly crouched in preparation for its leap, Finster screamed.