1913.] 
NATURAL SCIENCES OF PHILADELPHIA. 
707 
Report of the Botanical Section. 
During the year, following the policy of replacement of the old 
wooden cases by metal ones, further changes have been made in the 
arrangement of the herbarium. 
The Academy has furnished the herbarium during the year twenty 
additional tins, part of which have been installed in the place of 
the wooden cases formerly occupying the east wall of the north 
room, the balance having been used to relieve the crowding in the 
central room. The wooden cases thus removed have been placed 
on the east wall of the local room, relieving temporarily the over¬ 
crowding of this rapidly growing section. The cases taken from the 
local room have been re-erected in the central gallery room and are 
being used at present for storage. 
More than 10,000 specimens have been added to the general 
herbarium during the year, the largest accessions being the herbarium 
of Dr. C. D. Fretz, of Sellersville, Pa., presented to the Academy. 
It numbers approximately 5,000 sheets, about one-third of which 
have been assigned to the local herbarium. A large exchange of 
several thousand plants has been secured from the Trenton Museum, 
and smaller collections from the New York Botanical Garden, Gray 
Herbarium, and University of Pennsylvania, with donations from 
Charles S. Williamson and others. A majority of these plants have 
been mounted and installed in the collections. 
During September the Conservator spent three weeks in Bermuda, 
continuing his studies there in company with Dr. and Mrs. N. L. 
Britton, of the New York Botanical Garden. On this occasion 
particular attention was paid to the plants in several of the old gar¬ 
dens in the vicinity of Hamilton and St. George’s, much assistance 
being rendered by Mr. E. J. Wortley, of the Agricultural Gardens. 
Many specimens of interesting tropical plants were collected. They 
will add greatly to the value of our study material. 
During the year the Philadelphia Botanical Club has held its 
meetings regularly in the herbarium rooms, and its members as well 
as many visiting botanists have made much use of the collections. 
Mr. S. S. Yan Pelt has continued his valued services in the care of 
the local collection, and the Section is indebted to Mr. Bayard Long 
for important assistance in the same field. 
At the annual meeting held November 20, the following officers 
were elected. 
