Some way farther, in a grassy place, was a group of mushrooms which also I devoured, and then I came upon a brown sheet of flowing shallow water, where meadows used to be. These fragments of nourishment served only to whet my hunger. At first I was surprised at this flood in a hot, dry summer, but afterwards I discovered that it was caused by the tropical exuberance of the red weed. Directly this extraordinary growth encountered water it straightway became gigantic and of unparalleled fecundity. Its seeds were simply poured down into the water of the Wey and Thames, and its swiftly growing and Titanic water fronds speedily choked both those rivers.

At Putney, as I afterwards saw, the bridge was almost lost in a tangle of this weed, and at Richmond, too, the Thames water poured in a broad and shallow stream across the meadows of Hampton and Twickenham. As the water spread the weed followed them, until the ruined villas of the Thames valley were for a time lost in this red swamp, whose margin I explored, and much of the desolation the Martians had caused was concealed.

In the end the red weed succumbed almost as quickly as it had spread. A cankering disease, due, it is believed, to the action of certain bacteria, presently seized upon it. Now by the action of natural selection, all terrestrial plants have acquired a resisting power against bacterial diseases--they never succumb without a severe struggle, but the red weed rotted like a thing already dead. The fronds became bleached, and then shrivelled and brittle. They broke off at the least touch, and the waters that had stimulated their early growth carried their last vestiges out to sea.

My first act on coming to this water was, of course, to slake my thirst. I drank a great deal of it and, moved by an impulse, gnawed some fronds of red weed; but they were watery, and had a sickly, metallic taste. I found the water was sufficiently shallow for me to wade securely, although the red weed impeded my feet a little; but the flood evidently got deeper towards the river, and I turned back to Mortlake. I managed to make out the road by means of occasional ruins of its villas and fences and lamps, and so presently I got out of this spate and made my way to the hill going up towards Roehampton and came out on Putney Common.

Here the scenery changed from the strange and unfamiliar to the wreckage of the familiar: patches of ground exhibited the devastation of a cyclone, and in a few score yards I would come upon perfectly undisturbed spaces, houses with their blinds trimly drawn and doors closed, as if they had been left for a day by the owners, or as if their inhabitants slept within. The red weed was less abundant; the tall trees along the lane were free from the red creeper. I hunted for food among the trees, finding nothing, and I also raided a couple of silent houses, but they had already been broken into and ransacked. I rested for the remainder of the daylight in a shrubbery, being, in my enfeebled condition, too fatigued to push on.