"It's a perfect case of the utter impartiality of the forces of evolution. Men infected by this Disan life form were the dominant creatures on this planet. The creature in the magters' brains was a true symbiote then, giving something and receiving something. Making a union of symbiotes where all were stronger together than any could be separately. Now this is changed. The magter brain cannot understand the concept of racial death, in a situation where it must understand to be able to survive. Therefore, the brain-creature is no longer a symbiote but a parasite."
"And as a parasite it must be destroyed!" Brion broke in. "We're not fighting shadows any more," he exulted. "We've found the enemy—and it's not the magter at all. Just a sort of glorified tapeworm that is too stupid to know when it is killing itself off. Does it have a brain—can it think?"
"I doubt it very much," Lea said. "A brain would be of absolutely no use to it. So even if it originally possessed reasoning powers they would be gone by now. Symbiotes or parasites that live internally like this always degenerate to an absolute minimum of functions...."
"Tell me about it? What is this thing?" Ulv broke in, producing the soft form of the brain-symbiote. He had heard all their excited talk but had not understood a word.
"Explain it to him, will you Lea, as best you can," Brion said, looking at her and realized how exhausted she was. "And sit down while you do it, you're long overdue for a rest. I'm going to try—" He broke off when he looked at his watch.
It was after four in the afternoon—less than eight hours to go. What was he to do? Enthusiasm faded as he realized that only half of the problem was solved. The bombs would drop on schedule unless the Nyjorders could understand the significance of this discovery. Even if they understood—would it make any difference to them? The threat of the hidden cobalt bombs would not be changed.
With this thought came the guilty realization that he had forgotten completely about Telt's death. Even before he contacted the Nyjord fleet he must tell Hys and his rebel army what had happened to Telt and his sandcar. Also about the radioactive traces. They couldn't be checked against the records now to see how important they might be, but Hys might make another raid on the strength of the suspicion. This call wouldn't take long, then he would be free to tackle Professor-Commander Krafft.
Carefully setting the transmitter on the frequency of the rebel army, he sent out a call to Hys. There was no answer.
There was always a chance the set was broken. He quickly twisted the transmitter to the frequency of his personal radio, then whistled in the microphone. The received signal was so loud that it hurt his ears. He tried to call Hys again, and was relieved to get a response this time.