ARRANGEMENT OF PLANTING 65 



particles in the air. These particles reflect light, and 

 the farther away an object is, the more particles 

 intervene so that more light comes from the air and 

 less from the given object. When air is very clear, 

 as in certain mountainous regions, far-away things 

 seem near at hand. On the other hand, fog makes 

 objects look farther away. Fog often gives delight- 

 ful effects by separating groups at various distances 

 from the observer. It places light curtains behind 

 near-by trees, thus bringing out their details of 

 branch and leaf, and it hides the distance, producing 

 a feeling of mystery like woods. This fact might 

 be borne in mind in working out a plan ; for the 

 planting should be so designed as to be attractive in 

 all kinds of weather. The arrangement of the plant- 

 ing and the selection of the material to be used should 

 also be with reference to the seasons of the year and 

 the hours of the day. The most telling effects may 

 be desired in spring, summer, autumn, or even in 

 winter. 



Planting should be arranged with plenty of open 

 space so that the plants may be seen and so 

 they may be developed naturally and healthfully. 

 The sky-line and the various outlines below it should 

 be studied carefully and plants which harmonize 



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