ADJUSTMENT TO SURROUNDINGS 
145 
FIG. 104. Effect of removal of a leaflet from a palmately compound 
leaf (e.g. Woodbine). B, normal leaf; C, after removal of upper right-hand 
leaflet. A, Unbroken lines represent average normal position of leaflets; 
dotted lines, average position of leaflets after operation; barred line, posi- 
tion of leaflet removed. (A, after Zeleny.) 
FIG. 105. Motherwort (Leomirus Cardiaca), showing adjustment of 
leaves to light. This plant grew at the edge of shrubbery, receiving rela- 
tively little light from behind. 
