126 LESSONS WITS PLANTS 



local or transient conditions), but are a distinct 

 and habitual feature of the tree. In other words, 

 some plants normally bear two kinds of leaves. 



Fig. 124. 

 Foliage of ordinary tomatoes. 



137. The pupil_ has already been directed (Obs. 

 xvii.) to a study of the leaves of tomatoes. 

 The accompanying illustrations (Figs. 123-126) will 



