(182) 
rooms, horticultural laboratories, the collections of the 
Bronx Society of Arts and Sciences, the office of the Secre- 
tary of the Horticultural Society of New York, and the 
shops of the Garden are in its basement. 
g. Special collections of hardy plants in various parts 
of the grounds, including willows in the north meadows, 
Japanese cherries and a magnolia group in the arboretum, 
forest herbaceous plants on the wooded bank north of the 
long bridge east of the Bronx River; vines and climbers on 
an arbor east of the economic garden, an iris garden at 
Pelham Avenue and the Southern Boulevard; lilacs near 
the museum building and at the foot of the Bronx Boule- 
vard retaining wall, and conifer groups and rhododendrons 
at various points and other special collections at other 
places. A large rose garden is being constructed ina valley 
south of the mansion. 
In addition to these artificial features, the following 
natural features are noteworthy: 
10. The hemlock forest, a grove of the Canadian hemlock 
spruce, clothing the hills between the museum building and 
the Bronx River and covering about forty acres, consider- 
able portions of it being primeval. 
11. The gorge of the Bronx River, extending south from 
the waterfall at the Mansion, along the edge of the hemlock 
grove. The river plunges through its gorge in a series of 
rapids passing into quiet waters before it leaves the Garden 
under the Linnaean Bridge. 
12. The north meadows and river woods along the Bronx 
River from the northern end of the hemlock grove to the 
northern end of the Garden. 
13. Deciduous woodlands on rocky ridges in the southern 
and central parts of the reservation. 
14. General park features. 
