He pointed to a tiny light which had suddenly flashed into brilliance. Turgan nodded and led the way forward. At another doorway which opened to Turgan's touch on a hidden lever, the party paused. An instant later there came from a few hundred yards ahead of them a hoarse cry of alarm followed by the roar of a huge whistle.
"The battle has joined!" cried Turgan. The others crouched, tense and motionless. From ahead came the sound of battle. Violet light showed in short intense flashes. It was evident that the Jovian guard of the space ship was fighting valiantly to protect it. Shaking aside Turgan's restraining hand, Damis crept slowly forward.
Two hundred yards from the spot where he left Turgan he came to a bend in the passage. The sound of battle came from just ahead. He crept forward
