(37) 
visible from them. The space selected measures about 15 
acres, 
12. Viticetum. 
The cultivation of either herbaceous or woody vines, either 
in the herbaceous grounds or in the fruticetum, is regarded as 
difficult, owing to the amount of labor necessary in preventing 
them from growing over or shading other plants, and we re- 
commend that all vines be grouped together in a collection by 
themselves, the climbing and twining ones placed on arbors, 
poles and walls, and the trailing ones given space to spread 
at will. We have located this viticetum to the east of the 
northeastern portion of the First Horticultural House, in a 
tract which provides open space for the sun-loving species, 
and shade for those which require it. Much of this collection 
will be visible trom the driveway running to the east of the 
the First Horticultural House, and all will be seen from the 
paths which extend northward from the First Horticultural 
House to the site of the proposed lake. 
This grouping of the vines for systematic presentation 
will in no way prevent their use in decorative effect elsewhere 
in the Garden. 
13. Herbaceous Grounds, 
Space for the systematic collection of herbaceous plants 
has been selected in a glade at the southern end of the tract, 
lying about 200 feet east of the Southern Boulevard, and 
bordered to the east by the present forest. The tract, except 
for a border of trees to the west and the forest border to the 
east, is without trees at the present time. It is a meadow 
sloping from a brook which runs longitudinally through it, 
bordered by some marshy land, to the forest border on the 
east and the fringe of trees separating it from the pinetum to 
the west. Rock edges occur on both sides of the tract. The 
site, therefore, provides opportunity for aquatics, for marsh 
plants, for meadow plants, for hillside plants, for rock plants, 
and for those which demand the shade of the forest. By 
