"Has your science any way of telling us who was in command of the Jovian ship?" he asked. "Were your men who lie dead familiar with the features of the Jovian Viceroy?" "Yes, all of them." "Then we will search the brains of the dead. The pictures that are in the living brain fade rapidly when death comes, but the last impression of these men was a powerful one of fighting and hatred and some traces may remain. I will search." * * * * * The huge slug crawled over the ground to the body of the nearest dead Terrestrial. In one of his many hands he carried a shiny metal tube from which crimson rays flickered and played over the head of the dead man. The skull disintegrated under the influence of the strange instrument until the brain lay naked and exposed to the fierce glare of the Martian sun. The Martian delicately connected two wires terminating in metal plates to the tissue of the brain and attached the other ends of the wires to a metal circlet which he clamped about his middle. For some moments he remained motionless and then crawled to the body of the second dead Earthman. One after another he examined each of the eighteen dead bodies. When he had completed he crawled over to Damis and Turgan. "Put these bands about your brows," he commanded in thought language as he handed to each of them a metallic band similar to the one clasped about him. The two Earthmen quickly adjusted the bands. "Let your minds remain a blank and in them will be reproduced the impressions I have gathered from the brains of your dead followers." Damis sprang suddenly upward and smote with all of his force at the air. Out of nothingness had materialized the form of a huge Jovian clad in the uniform of Glavour's guards. His blow went harmless through the thin air and the Jovian swung a massive ax. Just before the blow landed the Jovian disappeared and a thought wave from the Martian impinged on Damis' brain. "Spare your energies, Nepthalim," the message said. "What you saw was not a Jovian but was the last impression stored in the brain of the man who met his death under a blow of the ax which seemed to be striking at you. I am merely reproducing in you the emotions and experiences that man felt. Had I allowed the phantom blow to land, you would now be cold in death, so great was the strength of the impression. Now make your mind again a blank and I will reveal to you what was in the mind of another at the instant that his death came upon him." * * * * * Before the Nepthalim's startled gaze, another Jovian appeared.