Two days was never enough time for a miracle. Doc decided as he packed his notes into a small bag and put it beside his bundle of personal belongings. He glanced around the room for the last time, and managed a grin at Jake's gloomy expression.  
"Maybe I can bluff them, or maybe they'll string along for a while," he said. "Anyhow, now that they've agreed to take me and my notes in place of the cure we're fresh out of, I've got to be on that shuttle when it goes back to their men at orbital station."
 
Jake nodded. "I don't like selling friends down the river, Doc. But it wouldn't do you any more good to blow up with the planet, I reckon. They won't call off the war rockets when they do get you, of course. But maybe they won't use them, except as a threat to put the Lobbies back in, stronger than ever."
 
He stuck out one of his awkwardly shaped hands, clapped the aspirator over his face and hurried out. Doc picked up his bags and went toward the little tractor where Lou was waiting to drive him and Chris back toward Southport and the shuttle rocket that would be landing for them. They hadn't mentioned Chris in their demands, but her father must expect her to return.
 
After they had him, he'd be on his own. His best course was probably to insist on talking only to Ryan at Medical Lobby, and then being completely honest.[Pg 114] The room here would be kept sealed, in case the Lobby wanted to investigate where he had failed. And his notes were honest, which was something that could usually be determined. Chris could testify to that, anyhow, since she'd kept a lot of them for him.
 
At best, there would be a chance for some compromise and perhaps some clue for them that might eventually end the plague. They had enough men to work on it, and billions in equipment. At worst, he should gain a little time.
 
"Cheer up, Chris," he told her as he climbed through the little airlock. "Maybe Harkness will turn up the cure before our negotiations break down. He has the whole of Northport Hospital to play with. They haven't tried to chase him out of there yet. After all, we almost found something with no equipment except wild imaginations."
 
She shook her head as the tractor began moving. "Shut up! I've got enough trouble without your coming down with logorrhea. Don't be a fool."
 
"Why change now?" he asked her. "Everything I've done has been because I am a fool. I guess my luck lasted longer than I could expect. And I'm still fool enough to think that the solution has to turn up eventually. We know it has to be in that room. Damn it, we must know it—if we could only think straight now."
 
She reached over and touched his hand, but made no comment. They had been over that statement of desperation too many times already. But it kept nagging at him—something in the room, something in the room! Something so common that nobody noticed it!
 
They passed a crowd chasing down a runner. Something in that room could have saved the unlucky man. It could have saved Mars, perhaps.[Pg 115]
 
He growled for the hundredth time, cursing his fatigue-numbed mind. Too little sleep, too much coffee and bracky....
 
He reached for the package of weed, realizing that he would miss it on Earth, if he ever got there. Like everything here on the planet, he'd begun by detesting it and wound up finding it the thing he wanted to keep forever. He lighted the bracky and sat smoking, watching Lou drive. When the first was finished, he lighted another from the butt.
 
She put out a hand and took it away. "Please, Dan. I can stand the stuff, but I'll never like it, and the tractor's stuffy enough already. I've taken enough of it. And it keeps reminding me of our test—the three of you stinking up the place, puffing and blowing that out, while I couldn't even get a breath of air...."
 
She was getting logorrhea herself now and—
 
The answer finally hit him! He jerked around, making a grab for Lou's shoulder, motioning for the man to head back.
 
"Bracky—it has to be! Chris, that's it. Jake picked out the second group of men from his friends—and they are all cronies because they hang around so much in their so-called smoking room. The first time, it killed the bugs for all of us who smoked—and it didn't work for you because you never learned the habit."
 
Lou had the tractor turned and the rheostat all the way to the floor.
 
She was sitting up now, but she wasn't fully satisfied. "The percentage of immunes seems about right. But why do some of the smokers get the disease while some don't?"
 
"Why not? It depends on whether they pick up the habit before or after the disease gets started. Tom must[Pg 116] have got his while he was in Northport. They wouldn't let him smoke there—if he had the habit before, for that matter."
 
She found no fault with that. He twisted it back and forth in his mind, trying to find a fault. There seemed to be none. The only trouble was that they couldn't send a message that bracky was the cure and hope that Earth would prove it true. No polite note of apology would do after that. They had to be sure. Too many other ideas had proved wrong already.
 
Jake saw them coming and came running toward the laboratory, but Lou stopped the tractor before it reached the building and let the older man in.
 
"Get me a dozen men who have the plague. I want the worst cases you have, and ones that Harkness tested himself," Doc ordered. "And then start praying that the cure we've got works fast."
 
Chris was at the electron mike at once, but one of her hands reached out for the weed. She began puffing valiantly, making sick faces. Now other men began coming in, their faces struggling to find hope, but not daring to believe yet. Jake followed them.
 
"We'll test at ten-minute intervals. That will be about two hours for the last from the group," Doc decided. One of the doctors Harkness had brought to the villages was busy cutting tiny sections from the lumps on the men's necks, while Chris ran them through the microscope to make sure the bugs were still alive. The regular optical mike was strong enough for that.
 
Doc handed each man a bracky weed, with instructions to keep smoking, no matter how sick it made him.
 
There were no results at the end of ten minutes when the first test was made. The second, at the end of twenty minutes, was still infected with live bugs. At[Pg 117] the half-hour, Chris frowned.
 
"I can't be sure—take a look, Dan."
 
He bent over, moving the slide to examine another spot. "I think so. The next one should tell."
 
There was no doubt about the fourth test. The bugs were dead, without a single exception that they could find.
 
One by one, the men were tested and went storming out, shouting the news. For a minute, the gathering crowd was skeptical, remembering the other failures. Then, abruptly, men were screaming, crying and fighting for the precious bracky, like the legions of the damned grabbing for lottery tickets when the prize was a passport to paradise.
 
Jake swore as he moved toward the door. "We're low on bracky here. Have to get a supply from Edison, I guess, and cart it to the shuttle. Enough for a sample, and to............