Barry's mind was working furiously. The changes the Sigma radiations had inflicted upon his body might reverse themselves spontaneously, Dr. Jensen had mentioned during a second visit—but for that to happen he must remain alive. That meant easing all possible strains.
When the doctor came in again Barry asked him to find Nick Podtiaguine. Within a few minutes the mechanic appeared.
"Cheez, it's good to see you, Barry," he began.
"Stuff it," the sick man interrupted. "I want favors. Can do?"
Nick nodded vigorously.
"First cut that air conditioner and get the window open."
Nick stared as though he were demented, but obeyed, unbolting the heavy plastic window panel and lifting it aside. He made a face at the damp, malodorous Venusian air but to Barry it brought relief.
It was not enough, but it indicated he was on the right track. And he was not an engineer for nothing.
"Got a pencil?" he asked.
He drew only a rough sketch, for Nick was far too competent to need detailed drawings.