mental eye as something distinctly visible, a thing of itself
and separate. But it is not so in nature; the effect is of
something almost invisible and is yet a part of all and makes
all things--sky and sea and land--as unsubstantial as itself.
Even living, moving things had that aspect. Far out on the
lowest further strip of sand, which appeared to be on a level
with the sea, gulls were seen standing in twos and threes and
small groups and in rows; but they did not look like gulls
--familiar birds, gull-shaped with grey and white plumage.
They appeared twice as big as gulls, and were of a dazzling
whiteness and of no definite shape: though standing still they
had motion, an effect of the quivering dancing air, the
"visible heat"; at rest, they were seen now as separate
objects; then as one with the silver sparkle on the
sea; and when they rose and floated away they were no longer
shining and white, but like pale shadows of winged forms
faintly visible in the haze.

They were not birds but spirits--beings that lived in or were
passing through the world and now, like the heat, made
visible; and I, standing far out on the sparkling sands, with
the sparkling sea on one side and the line of dunes,
indistinctly seen as land, on the other, was one of them; and
if any person had looked at me from a distance he would have
seen me as a formless shining white being standing by the sea,
and then perhaps as a winged shadow floating in the haze. It
was only necessary to put out one's arms to float. That was
the effect on my mind: this natural world was changed to a
supernatural, and there was no more matter nor force in sea or
land nor in the heavens above, but only spirit.