BULLETIN OF THE BUSSEY INSTITUTION. 455 
No. 25.— Report of the Director of the Arnold Arboretum, 
presented to the President and Fellows of Harvard Uni- 
versity. 
To THE PRESIDENT OF THE UNIVERSITY : — 
Sir,—I have the honor to submit the following Report of the 
present condition of the ARNOLD ARBORETUM, and of its progress 
during the nine months which have elapsed since the date of my last 
Report, December 1, 1874:— 
The Green-houses of the Bussey Institution having been placed at 
my disposal for the uses of the Arboretum, they have been devoted 
to the raising of forest and ornamental trees and shrubs for future 
plantations. Many of the plants of the last catalogue, which were 
then represented by only a few specimens, have now been raised in 
sufficient quantities, and 165 species have been added to the collec- 
tion. Probably over 100,000 ligneous plants have been raised during 
the nine months. 
The operation of thinning out the old trees with a view to their 
future improvement has been continued during the year, and the 
woods in the various portions of the grounds are now in such a condi- 
tion that their further thinning is not for the present desirable. 
Some two acres on the hill-side which forms the south-eastern 
boundary of the Arboretum, lying directly in the rear of the Stone 
Building of the Bussey Institution, have been planted with alternate 
Larch, Spruce, and Box Elder, to supply a needed shelter to the 
Plainfield from the north-west winds, and to define the boundary of 
the Arboretum in that direction. 
As many as 9,042 trees and shrubs have been presented during the 
nine months to various establishments and individuals throughout the 
United States interested in Arboriculture, and 69 have been sent to the 
Royal Gardens, Kew, England. 
The largest recipients have been the new Botanic establishment at 
Chicago, the Massachusetts Agricultural College at Amherst, and the 
University of Vermont. The department of propagation of the 
Botanic Garden has been transferred to the Arboretum, with excellent 
results in every way. The Green-houses are better suited for such 
