(70). 
In addition to the above, and not yet represented in the 
systematic collections, or of such nature that they do not read- 
ily permit of cultivation, there are about 850 species growing 
wild within the grounds. 
In the conservatory collection there are representatives of 
200 families and 1,321 genera. As these collections are 
available at all times of the year, and as they are systemati- 
cally grouped, they offer valuable facilities for study. In 
the herbaceous ground collection, which is available for study 
the greater part of the year, there have been represented the 
past year 79 families and 537 genera. In the fruticetum the 
collection embraces 50 families and 127 genera. The de- 
ciduous arboretum includes 23 families and 39 genera, and 
the pinetum 3 families and 20 genera. The salicetum, of 
course, has but 1 family and 2 genera. The viticetum illus- 
trates 13 families and 15 genera. 
General Horticultural Operations 
This work has been done under the immediate direction of 
the second gardener, Mr. George A. Skene. The force 
available for the accomplishment of this work has comprised: 
one foreman-gardener, seventeen gardeners, nine appren- 
tices, and at times thirteen or fourteen laborers. In addition 
to the above, one driver for his entire time and two during the 
mowing season were assigned to this department for the pur- 
poses of hauling and mowing. 
Of the above force one foreman-gardener, nine gardeners 
(one in charge of the conservatory cellar), and six appren- 
tices have been detailed to the conservatories; three garden- 
ers and two apprentices to the propagating houses; and five 
gardeners and thirteen or fourteen laborers to the outside 
work. 
The region to be maintained by the outdoor force was the 
past year divided into several tracts, a gardener in charge, 
with a number of laborers, being assigned to eachtract. All 
gardening operations, including mowing, with the exception 
of horse-mowing, was performed by the force detailed to 
