20 
NATURE FOR ITS OWN SAKE 
Horizon 
hues at twi- 
light. 
decided impression on the landscape. The two 
lights together give us the most charming il- 
lumination imaginable. The expiring fire of 
the one and the soft glow of the other mingle 
in a strange amalgam ; and a lInstrous light 
envelops the world as tender and as lovely as 
that reflected from mother-of-pearl. There is 
neither deep shadow nor sharp color ; and around 
the great ring of the horizon, stealing far up the 
sky, there is a vast blend and mystery of color. 
The molten golds and garnets of the west as they 
steal along the horizon circle to the north and 
south, change into opalescent tints of yellow, 
rose, and amethyst ; and the blue and silver of 
the east as they spread out to meet the flush 
of the west, pass through all the shades of gray, 
mauve, and lilac. For producing delicate tints 
of color there is no such light as this double il- 
lumination coming from the east and the west. 
Wonderful in their variety, more wonderful in 
their unity, these tints drape the whole circle of 
the horizon like a celestial tapestry. Never for 
a moment are they fixed or permanent. The 
great waves of light that came up the blue vault 
at dawn have calmed down to gentle undula- 
tions, but they still heave and roll along the ho- 
rizon-walls, and at every heave some beautiful 
