The colour of the electric lights has a strange effect in giving a complementary tint to the air in the early evening.—Essay on London.

O, Heavenly colour! London town
Has blurred it from her skies;
And hooded in an earthly brown,
Unheaven’d the city lies.
No longer standard-like this hue
Above the broad road flies;
Nor does the narrow street the blue
Wear, slender pennon-wise.

But when the gold and silver lamps
Colour the London dew,
And, misted by the winter damps,
The shops shine bright anew—
Blue comes to earth, it walks the street,
It dyes the wide air through;
A mimic sky about their feet,
The throng go crowned with blue.