They both looked at Coffin. "Now don't be ridiculous, boys," said Coffin, turning white. "We're in this together. Phillip, it was your idea in the first place--you said so yourself! You can't leave me now--" The telephone jangled. They heard the frightened voice of the secretary clear across the room. "Dr. Coffin? There was a student on the line just a moment ago. He--he said he was coming up to see you. Now, he said, not later." "I'm busy," Coffin sputtered. "I can't see anyone. And I can't take any calls." "But he's already on his way up," the girl burst out. "He was saying something about tearing you apart with his bare hands." Coffin slammed down the receiver. His face was the color of lead. "They'll crucify me!" he sobbed. "Jake--Phillip--you've got to help me." Phillip sighed and unlocked the door. "Send a girl down to the freezer and have her bring up all the live cold virus she can find. Get us some inoculated monkeys and a few dozen dogs." He turned to Coffin. "And stop sniveling. You're the big publicity man around here; you're going to handle the screaming masses, whether you like it or not." "But what are you going to do?" "I haven't the faintest idea," said Phillip, "but whatever I do is going to cost you your shirt. We're going to find out how to catch cold again if we have to die." * * * * * It was an admirable struggle, and a futile one. They sprayed their noses and throats with enough pure culture of virulent live virus to have condemned an ordinary man to a lifetime of sneezing, watery-eyed misery. They didn't develop a sniffle among them. They mixed six different strains of virus and gargled the extract, spraying themselves and every inoculated monkey they could get their hands on with the vile-smelling stuff. Not a sneeze. They injected it hypodermically, intradermally, subcutaneously, intramuscularly, and intravenously. They drank it. They bathed in the stuff. But they didn't catch a cold. "Maybe it's the wrong approach," Jake said one morning. "Our body defenses are keyed up to top performance right now. Maybe if we break them down we can get somewhere." They plunged down that alley with grim abandon. They starved themselves. They forced themselves to stay awake for days on end, until exhaustion forced their eyes closed in spite of all they could do. They carefully devised vitamin-free, protein-free, mineral-free diets that tasted like library paste and smelled worse. They wore wet clothes and sopping shoes to work, turned off the heat and threw windows open to the raw winter air. Then they resprayed themselves with the live cold virus and waited reverently for the sneezing to begin. It didn't. They stared at each other in gathering gloom. They'd never felt better in their lives.