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talpa and American hornbeam, and quite near the 

 Bridge another Catalpa bignonioides has set its feet 

 with firm root. Close by the right-hand corner of 

 the Bridge a white birch (Betula populifolia) flutters 

 its dancing leaves. Crossing the Bridge we follow 

 the Walk on northwards to where it forks right and 

 left and embraces in its arms the Ball Ground. 



Let us take the right-hand fork and follow it around 

 the eastern border of the Ball Ground. Just beyond 

 the lamp-post, on your left, as you proceed you pass 

 a paper mulberry which is very conveniently situated 

 for close study. Look for the bands on its bark and 

 its mitten-shaped leaves. The next tree beyond this 

 paper mulberry is English maple. You easily know 

 it by its squarish lobed leaves. 



The Walk now swings northward and very near the 

 rocks which have bitten through the soil about mid- 

 way between either end of the Ball Ground, near the 

 Walk, you will find, on your left, a couple of very 

 good specimens of the European linden. The Euro- 

 pean linden (Tilia Eur op to) is certainly a handsome 

 tree with its obliquely heart-shaped leaves, much more 

 finely serrated than those of our American basswood, 

 and much smaller. The leaf of the European species 

 also has usually a decided hump or point on one side 

 of the leaf, a little below its tip. Its whole texture is 

 much finer than our basswood's leaf; its upper side 

 is smooth, and, when young, of a beautiful tender 

 green. On the underside of the leaf noticeable little 

 woolly tufts are gathered in the axils of the veins. 

 In form the tree is broad dome-shaped with a wide 



