And as the day advanced and the engine drivers and stokers refused
to return to London, the pressure of the flight drove the people in an
ever-thickening multitude away from the stations and along the
northward-running roads.  By midday a Martian had been seen at Barnes,
and a cloud of slowly sinking black vapour drove along the Thames and
across the flats of Lambeth, cutting off all escape over the bridges
in its sluggish advance.  Another bank drove over Ealing, and
surrounded a little island of survivors on Castle Hill, alive, but
unable to escape.