(T91 ) 
damage to the natural features of the grounds, particular 
care having been taken to save all possible standing trees and 
to avoid disturbing natural slopes except in the immediate 
neighborhood of the large buildings, where considerable 
grading has been necessary, but even here the study has been 
to adjust the new surfaces so that they shall merge imper- 
ceptibly into the original ones. Ornamental masonry retain- 
ing walls, made necessary by the grades of the roadways, 
have been built at the Mosholu Parkway entrance, at the 
Woodlawn road entrance, and at the approach to the Ele- 
vated Railway station, and vines have been planted at the 
bases of these walls which will ultimately clothe them with 
foliage, at least in part. 
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 rubble stone 
foot-bridge of five arches, to replace the wooden bridge just 
at the northern end of the hemlock forest, and long known 
as the ‘‘ Blue Bridge,” is now under contract to be built on 
designs by the same engineer; studies are in progress for a 
bridge to replace the wooden bridge which crosses the gorge 
of the Bronx River at the Lorillard mansion; and the sixth 
bridge in the plan is a foot-bridge to cross the Bronx River 
in the north meadows, but this has not yet been designed, as 
its need is not yet urgent. 
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 hav- 
ing been used, and many shrub plantations have been set out, 
especially at roadway and path intersections, utilizing con- 
siderable numbers of the same kinds of shrubs at different 
points. 
