( 35) 
be devoted to the collection of hardwood trees, with the ex- 
ception of an area toward the southern end reserved for forest, 
a narrow fringe of trees along the Bronx extending north 
about to the present ‘‘ Blue Bridge,” and an area in the north- 
ern part of the tract reserved for open meadows. The tract 
remaining is much diversified in character, affording a great 
variety of soil and exposure, and is in places rather densely 
wooded, in other places meadow. We find that about 275 
species of deciduous trees, exclusive of some 40 others which, 
while sometimes trees, are small and hence best treated as 
shrubs in the fruticetum, may be expected to grow in our lati- 
tude, and allowing a large number of fine specimen trees, 
already standing in this area, to remain, that they can be so 
located in a nearly natural sequence as to allow two or three 
permanent individuals of each species. It is here recom- 
mended, as in the case of the pinetum, that the primary plant- 
ing be much in excess of the number planned for permanent 
trees. 
The arboretum will be intersected by the longitudinal road 
system east of the Bronx for its entire length, and also by the 
transverse driveway ending at Bleecker Street. The path 
system has been so planned as to bring individuals of every 
natural family into view, and representatives of most of the 
families will also be in view from the driveways. The arbore- 
tum will surround the director’s house, the second gardener’s 
house, the propagating houses, the stable, the nurseries and 
the Economic Garden. Its area is about 70 acres. 
It is recommended that the change of this tract from its 
present condition to a completed arboretum be effected very 
gradually, and that comparatively few standing trees be re- 
moved until the planted arboretum trees have grown to a con- 
siderable height, each particular case to be treated from a 
consideration of its immediate surroundings. By retaining 
the large number of specimen trees which the plan calls for, 
and applying the above recommended treatment, the tract, 
which already supports some 30 species of trees, will always 
