Art Out-of-Doors 
their more sharply cut shapes and the more 
straggling form of the tree itself. The silver- 
maple is the better tree to supply a lively 
accent where this is wanted ; but the other 
is preferable for use in large masses, or as a 
single specimen where a strong yet quiet 
note will be the right one. 
The most effective combinations of color, 
when they are rightly made, are those which 
mean contrast rather than simple concord. 
But it is usually better, and it is always 
safer, to place two tones of the same tint to- 
gether — as a dark and a lighter bluish green 
— rather than to associate two alien tints — 
as a bluish with a yellowish green. Grayish 
greens are the best when something is needed 
to harmonize other strongly contrasting 
tints. Everyone knows this who has studied 
the work of landscape-painters ; and we may 
sometimes see the fact illustrated toward 
evening, when a plantation which has been 
inharmonious in color under a bright light 
becomes harmonious simply by the fading of 
one or two of its tints into grayish twilight 
hues. 
Of course, when a tree is not green at all — 
256 
