FIG. 843. A winter landscape, showing the contrast between deciduous and evergreen 

 trees; the evergreens are the Austrian pme-^Pinus Laricio); the deciduous trees are 

 willows (Salix alba) and silver maples (Acer saccharinum) ; the pines are excurrent, while 

 the other trees are deliquescent; Chicago, 111. Photograph by FULLER. 



FIG. 844. A sugar maple (Acer sac- 

 charum) that has grown in the open and thus 

 is symmetrical.the general shape being conical 

 with a rounded apex; this figure represents 

 a deciduous tree in summer condition; Lan- 

 caster, Ohio. Photograph by HYDE. 



S84 



FIG. 845. The same tree shown in (i^. 

 844, but in winter condition; note that the 

 conical shape is due to the gradual change in 

 branch direction from horizontal or descend- 

 ing at the base to ascending and finally to 

 vertical at the apex. Photograph by HYDE. 



