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variety of the honey-locust, known as var. inermis, and 

 the Park has one of this kind not far from the Six- 

 teenth Street entrance. Back of the honey-locust 

 there are some beautiful purple beeches. Note the 

 handsome silver-gray of their barks. 



If we come back to the Walk again and continue 

 westwards, beyond the cranberry bush is huckleberry, 

 then Japan quince, then another copper beech stand- 

 ing close by the Walk, on your left. Back of this 

 tree are two common locusts standing close together 

 and, a little further on, two more, almost in a straight 

 line with each other. Passing an open stretch of 

 grassy hillside here, we come, near Terrace Bridge, 

 to fine clumps of arrowwood which you will know 

 at once by their regularly notched leaves. The stems 

 of the Viburnum dentatum, the Indians used for ar- 

 rows, hence its name. Up the hill a little, just be- 

 yond the arrowwood is a blue willow. It is really 

 a variety of the white willow with leaves of a very 

 bluish cast on their undersides. By the Walk, be- 

 yond the arrowwood, is bay or laurel-leaved willow, 

 which you can distinguish by its dark, glossy green 

 laurel-like leaves noticeably marked by a whitish or 

 yellowish midrib and veins. 



Let us come back now to the locust near the spot 

 where we turned off to go up the hill a little. Oppo- 

 site to it, is a bush of ninebark Physocarpus (or Spi- 

 raea opulifolia}. It gets its common name from its 

 ragged, tattered stems and branches. To look at them 

 you might think that they could be peeled more than 

 nine times. The shreds of bark flutter all over them. 



