no 



affair, which is very conspicuous on the tree as autumn 

 draws near. This four-winged nut has given the tree 

 its botanical name tetraptera, from two Greek words, 

 tetra (four) and ptera (wings). The halesia's bark is 

 also conspicuously marked with dull, reddish-yellow 

 fissures or lines, which make it easily recognizable in 

 winter. 



Following the westerly branch of the Walk north- 

 wards, at the point of the west fork, on your left, is 

 osage orange. This is a double fork with an open 

 space between the two. At the upper branching, one 

 shoot runs off to the west to meet the Drive, the other 

 to the east, to come out by the Morse Statue, near the 

 Seventy-second Street Gate. Let us take the easterly. 

 As we start off, we cannot pass without a word of 

 comment, the fine gathering of stately bald cypresses 

 which fill the arm of the Walk on our right. Not far 

 from the next offshoot of path is shagbark hickory, 

 easily known by its bark which well bears out its name. 

 Following along, on your left, are swamp white oak 

 and halesia. Directly west of the halesia is a fine old 

 white mulberry with glossy green leaves, and directly 

 west of this mulberry stands another shagbark hickory. 

 The shagbark's leaves are made up of five leaflets with 

 the lower pair much smaller than the upper. 



Continuing on, now northerly, we come to three 

 dogwoods, almost in line with each other, with a fine 

 old white pine west of the third tree. West of this 

 white pine is a fair specimen of the yellow birch. You 

 can know it by its rough, shredded bark, of a peculiar 

 sheeny gray. In front of the dogwood, by the Walk, 



