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.