It was heavy, this vapour, heavier than the densest smoke, so that, after the first tumultuous uprush and outflow of its impact, it sank down through the air and poured over the ground in a manner rather liquid than gaseous, abandoning the hills, and streaming into the valleys and ditches and watercourses even as I have heard the carbonic-acid gas that pours from volcanic clefts is wont to do. And where it came upon water some chemical action occurred, and the surface would be instantly covered with a powdery scum that sank slowly and made way for more. The scum was absolutely insoluble, and it is a strange thing, seeing the instant effect of the gas, that one could drink without hurt the water from which it had been strained. The vapour did not diffuse as a true gas would do. It hung together in banks, flowing slug- gishly down the slope of the land and driving reluctantly before the wind, and very slowly it combined with the mist and moisture of the air, and sank to the earth in the form of dust. Save that an unknown element giving a group of four lines in the blue of the spectrum is concerned, we are still entirely ignorant of the nature of this substance.

Once the tumultuous upheaval of its dispersion was over, the black smoke clung clung so closely to the ground, even before its precipitation, that fifty feet up in the air, on the roofs and upper stories of high houses and on great trees, there was a chance of escaping its poison altogether, as was proved even that night at Street Cobham and Ditton.

The man who escaped at the former place tells a wonderful story of the strangeness of its coiling flow, and how he looked down from the church spire and saw the houses of the village rising like ghosts out of its inky nothingness. For a day and a half he remained there, weary, starving and sun-scorched, the earth under the blue sky and against the prospect of the distant hills a velvet-black expanse, with red roofs, green trees, and, later, black-veiled shrubs and gates, barns, out- houses, and walls, rising here and there into the sunlight.

But that was at Street Cobham, where the black vapour was allowed to remain until it sank of its own accord into the ground. As a rule the Martians, when it had served its purpose, cleared the air of it again by wading into it and directing a jet of steam upon it.

This they did with the vapour banks near us, as we saw in the starlight from the window of a deserted house at Upper Halliford, whither we had returned. From there we could see the searchlights on Richmond Hill and Kingston Hill going to and fro, and about eleven the windows rattled, and we heard the sound of the huge siege guns that had been put in position there. These continued intermittently for the space of a quarter of an hour, sending chance shots at the invisible Martians at Hampton and Ditton, and then the pale beams of the electric light vanished, and were replaced by a bright red glow.

Then the fourth cylinder fell--a brilliant green meteor--as I learned afterwards, in Bushey Park. Before the guns on the Richmond and Kingston line of hills began, there was a fitful cannonade far away in the southwest, due, I believe, to guns being fired haphazard before the black vapour could over- whelm the gunners.

Who was it now who had done that? Peter Walsh asked himself, turning into the Broad Walk,—married a rich man and lived in a large house near Manchester? Somebody who had written him a long, gushing letter quite lately about “blue hydrangeas.” It was seeing blue hydrangeas that made her think of him and the old days—Sally Seton, of course! It was Sally Seton—the last person in the world one would have expected to marry a rich man and live in a large house near Manchester, the wild, the daring, the romantic Sally!

But of all that ancient lot, Clarissa’s friends—Whitbreads, Kinderleys, Cunninghams, Kinloch-Jones’s—Sally was probably the best. She tried to get hold of things by the right end anyhow. She saw through Hugh Whitbread anyhow—the admirable Hugh—when Clarissa and the rest were at his feet.

“The Whitbreads?” he could hear her saying. “Who are the Whitbreads? Coal merchants. Respectable tradespeople.”

Hugh she detested for some reason. He thought of nothing but his own appearance, she said. He ought to have been a Duke. He would be certain to marry one of the Royal Princesses. And of course Hugh had the most extraordinary, the most natural, the most sublime respect for the British aristocracy of any human being he had ever come across. Even Clarissa had to own that. Oh, but he was such a dear, so unselfish, gave up shooting to please his old mother— remembered his aunts’ birthdays, and so on.

Sally, to do her justice, saw through all that. One of the things he remembered best was an argument one Sunday morning at Bourton about women’s rights (that antediluvian topic), when Sally suddenly lost her temper, flared up, and told Hugh that he represented all that was most detestable in British middle-class life. She told him that she considered him responsible for the state of “those poor girls in Piccadilly”—Hugh, the perfect gentleman, poor Hugh!— never did a man look more horrified! She did it on purpose she said afterwards (for they used to get together in the vegetable garden and compare notes). “He’s read nothing, thought nothing, felt nothing,” he could hear her saying in that very emphatic voice which carried so much farther than she knew. The stable boys had more life in them than Hugh, she said. He was a perfect specimen of the public school type, she said. No country but England could have produced him. She was really spiteful, for some reason; had some grudge against him. Something had happened—he forgot what— in the smoking-room. He had insulted her—kissed her? Incredible! Nobody believed a word against Hugh of course. Who could? Kissing Sally in the smoking-room! If it had been some Honourable Edith or Lady Violet, perhaps; but not that ragamuffin Sally without a penny to her name, and a father or a mother gambling at Monte Carlo. For of all the people he had ever met Hugh was the greatest snob—the most obsequious—no, he didn’t cringe exactly. He was too much of a prig for that. A first-rate valet was the obvious comparison— somebody who walked behind carrying suit cases; could be trusted to send telegrams—indispensable to hostesses. And he’d found his job—married his Honourable Evelyn; got some little post at Court, looked after the King’s cellars, polished the Imperial shoe-buckles, went about in knee-breeches and lace ruffles. How remorseless life is! A little job at Court!