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entrance, at the Woodlawn road entrance, and at the ap- 
proach to the Elevated Railway station, and vines have 
been planted at the bases of these walls which partly clothe 
them with foliage. The Bronx Boulevard, bounding the 
Garden to the east, is supported along part of its length 
by a high rubble stone retaining wall. 
The plan of the driveway and path systems called for the 
construction of six bridges; three of these, first, the lake 
bridge, crossing the valley of the lakes near the museum 
building; second, the long bridge, which carries the drive- 
way across the valley of the Bronx River north of the hem- 
lock forest; and, third, the upper bridge which crosses the 
Bronx River at the northern end of the Garden, have been 
carried out in masonry arches from designs by Mr. John R. 
Brinley, landscape engineer of the Garden. A unique boul- 
der foot-bridge of five arches, just at the northern end of the 
hemlock forest was built from designs by the same engineer. 
The concrete-steel bridge spanning the gorge of the Bronx 
below the waterfall was built by the Park Department; 
and the sixth bridge in the plan is a foot-bridge, temporarily 
built of wood, ultimately designed in concrete, crossing the 
Bronx River in the north meadows. 
The bridge dedicated to Linnaeus, which carries the Pel- 
ham Parkway across the Bronx, is appropriately located 
between the Botanical Garden and the Zoological Park. 
The park treatment further contemplates the planting of 
shade trees where these are needed along the driveways, 
and much of this has been done, a great many kinds of trees 
having been used, and many shrub plantations have been 
set out, especially at roadway and path intersections, 
utilizing considerable numbers of the same kinds of shrubs 
at different points. 
The drainage of the grounds has been carried out in ac- 
cordance with a well-studied original plan, which provides 
outlets for the surface drainage for the most part either into 
the lakes or into the river, only a small portion of it being 
taken into the sewers; only a small portion of the drainage 
system still remains to be built. 
