16 
such specimens. Oaks, birches, willows, hydrangeas, barberry, 
ashes, pines, firs, and spruces, all common in the Eastern States, 
are represented by many species in this valuable collection. 
Among the oaks there are 16 species from China alone, besides 4 
other species from other parts of the world. In the birches there 
are 15 Asiatic species, 12 of which are from China, the others 
from Siberia. Salix, the willow, is not so common in China as 
with us, only 8 Chinese species being secured. Our single wild 
hydrangea (/7. arborescens) is represented in China by 5 species 
of the Wilson collection, one of which, H. anomala, is a vine. 
Our only local species of barberry, Berberis canadensis, finds 
many relatives in China, apparently the ancestral home of the, 
Barberry family. ‘There are more than 35 Chinese species now 
in our collections, all of which came from the arboretum. Un- 
fortunately, the arboretum has only small seedling plants of the 
pines, spruces and firs, except a few large specimens, and we 
have secured altogether only 10 coniferous species. There must 
be at least 30-40 coniferous species in the cold-frames at the 
arboretum, and as many rhododendrons and azalias. All of 
these could be secured next autumn, as well as some other things 
which it was judged too hazardous to move, in view of the unfin- 
ished state of our greenhouses. 
Another very desirable acquisition to our collections is a 
specimen of the Buffalo-nut (Pyrularia). This shrub, reputed to 
be wholly parasitic on the roots of the hemlock, is therefore 
almost impossible to cultivate. Mr. Jackson Dawson, the head 
gardener at the arboretum, has succeeded in getting some seed- 
lings of Pyrularia established in pots in which the hemlock is 
growing as the host plant. This was done by sowing seed of the 
Buffalo-nut in the pot in which the hemlock had already attained 
a height of a foot or two. The sprouting seedlings of Pyrularia 
became attached to the roots of the hemlock, and the two plants 
grow in the same pot, the subsequent existence of the Pyrularia 
depending on the close association thus early secured. Our 
specimen is about two years old and in a very vigorous condition. 
Professor Sargent also kindly picked out a set of 25 species of 
thorns (Craraes gus), iN as many representative groups as pos- 
sible, for the wild flower garden. All of these are native within 
100 miles of Brooklyn. A very complete set of native shad- 
