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essentially completed during 1904. Considerable additions 
have been made to this collection of shrubs from various 
sources, so that now about 665 species are available for study. 
3. Salicetum. The area of marsh and meadow land at 
the northern end of the Garden devoted to the collections of 
willows, poplars and other water-loving trees and shrubs is 
in much the same condition as the fruticetum, owing to the 
building of roads and paths, and the collections here have 
not been materially increased, the number of species culti- 
vated being about 30. Here also much finished work may 
be accomplished during 1g04. 
4. Arboretum. Early in the spring a large collection of 
hardy conifers, presented to the Garden by Mr. Lowell M. 
Palmer of Stamford, Connecticut, was set out in the area be- 
tween the museum building, the herbaceous garden and the 
approach to the elevated railroad station in accordance with 
the general plan, thus commencing the installation of the 
evergreen part of the tree plantations, which will be referred 
to as the pinetum. Some additions were made to this collec- 
tion in the autumn, and it will be increased from time to time 
as the desired trees are obtained. 
Additions have also been made to the collection of decidu- 
ous leaved trees in the aboretum tract east of the Bronx 
River. In all the number of kinds of hardy trees now rep- 
resented in the Garden, including some still in the nurseries 
and yet too small to be set out, is about 450. 
5. Vrticetum. Thecollection of vines planted onthe rough 
arbor built some years ago near the edge of the forest east of 
the museum building, has been cultivated but not increased. 
6. Public Conservatory Collection. The collections of 
plants in the great glass houses have made much growth 
during the year, and have been increased from a variety of 
sources, principally from specimens obtained by gift, and by 
others collected during the several expeditions sent out by the 
Garden into tropical America; also by plants derived from 
seeds and cuttings grown in the propagating houses. The 
number of species now exhibited in the public conservatories 
is about 6,600 as against 5,800 a year ago. 
