"But, man alive, how long will it last?"

"Perhaps an hour or perhaps a week. Do you grasp what an awful calamity faces us?"

Williamson had no reply. So long as the fog lasted, London was in a state of siege, and, not only this, but every house in it was a fort, each depending upon itself for supplies. No bread could be baked, no meal could be carried round, no milk or vegetables delivered so long as the fog remained. Given a day or two of this and thousands of families would be on the verge of starvation. It was not a pretty picture that Hackness drew, but Williamson was bound to agree with every word of it.

These two men sat in the darkness till what should have been the dawn, whilst scores of subordinates were setting some sort of machinery in motion to preserve order.

Hackness stumbled home to his rooms about nine o'clock in the morning, without having succeeded in persuading the officials to grant him permission to experiment. Mechanically he felt for his watch to see the time. The watch was gone. Hackness smiled grimly. The predatory classes had not been quite blind to the advantages of the situation.

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.