WOUNDED LEAVES OF LILAC, Aug. 2-17,1921 
WOUNDED LEAVES OF ASC LE PI AS , Aug .5.* 15.1921 
In marked contrast to Ascl'epias were the results obtained with 
Lilac. Figure 1 shows a larger partly shaded leaf, (a), and two 
smaller sun leaves (be). In all three of these the outer margin 
Figure 1. 
