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

 trees; the evergreens are the Austrian pine (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 symmetrica], 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 6g. 

 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. 



