being very striking in these near views.

Under this shadow, during the cool centuries immediately following the
breaking-up of the Glacial Period, dwelt a small residual glacier, one
of the few that lingered on this sun-beaten side of the Valley after the
main trunk glacier had vanished. It sent down a long winding current
through the narrow canyon on the west side of the fall, and must have
formed a striking feature of the ancient scenery of the Valley; the
lofty fall of ice and fall of water side by side, yet separate and
distinct.

The coolness of the afternoon shadow and the abundant dewy spray make a
fine climate for the plateau ferns and grasses, and for the beautiful
azalea bushes that grow here in profusion and bloom in September, long
after the warmer thickets down on the floor of the Valley have withered
and gone to seed. Even close to the fall, and behind it at the base of
the cliff, a few venturesome plants may be found undisturbed by the
rock-shaking torrent.

The basin at the foot of the fall into which the current directly pours,
when it is not swayed by the wind, is about ten feet deep and fifteen to
twenty feet in diameter. That it is not much deeper is surprising, when
the great height and force of the fall is considered. But the rock where
the water strikes probably suffers less erosion than it would were the
descent less than half as great, since the current is outspread, and
much of its force is spent ere it reaches the bottom--being received on
the air as upon an elastic cushion, and borne outward and dissipated
over a surface more than fifty yards wide.

This surface, easily examined when the water is low, is in tensely clean