EVERGREENS: THEIR USES AND CULTURE 81 



which it is designed to leave for the permanent shelter. Many an 

 exposed barnyard or poultry run might be transformed into a place 

 of genuine comfort for its inmates on wintry days, by planting along 

 its northern and western sides a row of white pine, Norway spruce 

 or arborvitae. Frequently, a barn which has been located too near 

 the dwelling, a number of outbuildings or an unsightly view, may 

 be concealed by the suitable location of a group of evergreens, and 

 in many instances this bit of planting will perform the double func- 

 tion of screen and windbreak. A strip approximately ten times its 

 height is protected by a windbreak, as is shown by the snow lying 

 smooth on the ground for this distance beyond it after a storm. 



FIG. IV A White Pine Windbreak. Trees are fifteen years old. Photo by Waid 



Often a windbreak can be worked into the general landscape effect 

 to break up the monotony. This is done by informal grouping and 

 combining different shades of color. Thus an irregular shelter belt 

 of evergreens becomes, with maples, birches and other trees, a 

 charming addition to the landscape. Its graceful outlines are far 

 more charming than the formal and stiff appearance of the straight- 

 row windbreak of a single species. 



