There was no breakfast for Hackness for the simple reason that it had been found impossible to light the kitchen fire. But there was a loaf of bread, some cheese, and a knife. Hackness fumbled for his bottled beer and a glass. There were many worse breakfasts in London that morning. He woke presently, conscious that a clock was striking nine. After some elaborate thought and the asking of a question or two from another inmate of the house, Hackness found to his horror that he had slept the clock round nearly twice. It was nine o'clock in the morning, twenty-three hours since he had fallen asleep! And, so far as Hackness could judge, there were no signs of the fog's abatement. He changed his clothes and washed the greasy slime off him so far as cold water and soap would allow. There were plenty of people in the streets, hunting for food for the most part; there were tales of people found dead in the gutters. Progression was slow, but the utter absence of traffic rendered it safe and possible. Men spoke with bated breath, the weight of the great calamity upon them. News that came from a few miles outside the radius spoke of clear skies and bright sunshine. There was a great deal of sickness, and the doctors had more than they could manage, especially with the young and the delicate. And the calamity looked like getting worse. Six million people were breathing what oxygen there was. Hackness returned to his chambers to find Eldred awaiting him. "This can't go on, you know," the latter said tersely. "Of course it can't," Hackness replied. "All the air is getting exhausted. Come with me down to Scotland Yard and help to try and persuade Williamson to test my experiment." "What! Do you mean to say he is still obstinate?" "Well, perhaps he feels different to-day. Come along." Williamson was in a chastened frame of mind. He had no optimistic words when Hackness suggested that nothing less than a violent meteorological disturbance would clear the deadly peril of the fog away. It was time for drastic remedies, and if they failed things would be no worse than before. "But can you manage it?" Williamson asked. "I fancy so," Hackness replied. "It's a risk, of course, but everything has been ready for a long time. We could start after to-morrow midnight, or any time for that matter." "Very well," Williamson sighed with the air of a man who realises that after all the tooth must come out. "If this produces a calamity I shall be asked to send in my resignation. If I refuse----" "If you refuse there is more than a chance that you won't want another situation," Hackness said grimly. "Let's get the thing going, Eldred."