662 
PROCEEDINGS OF THE ACADEMY OF 
[Dec., 
Vertebrate Fossils. 
Much progress has been made in bringing the collections in this 
department into order. Mr. J. A. G. Rehn has cleansed and cata¬ 
logued the entire series of mammalian and avian remains and finished 
the systematic arrangement of all the smaller specimens in trays 
under the cases on the gallery of the north wing. Mr. Henry W. 
Fowler has done the same for the fishes which are arranged in drawer 
cases on the fourth floor. He has also catalogued the entire series 
of reptiles. Dr. Stone has temporarily arranged the reptiles and 
larger mammalian specimens in old cases in the north wing which 
have been renovated for the purpose. This brings the material all 
together, but new cases will be required before it can be systematically 
displayed. Material has been loaned during the year to Drs. R. W. 
Shufeldt and L. Hussakof. 
Herbarium. 
Mr. Stewardson Brown, who has had charge of the collections of 
plants, was absent for nearly half the year on account of severe 
illness, but the department was looked after by Messrs. S. S. Van 
Pelt and Bayard Long, who have generously devoted almost their 
whole time to the care and development of the local collection of 
plants. 
The work in the general herbarium has been mainly devoted to 
caring for the numerous accessions. Miss Ada Allen has continued 
to do the mounting and Mr. Brown has labelled, catalogued and 
distributed the sheets as well as identified many specimens for 
correspondents. 
Through an arrangement with the trustees of Lafayette College, 
the herbarium of the late Dr. Thomas C. Porter has been deposited 
in the Academy. It is conservatively estimated to contain 30,000 
sheets of plants, among which is the series of the Pennsylvania flora 
which served as the basis of Dr. Porter’s State list. The herbarium 
of the late Charles S. Williamson, containing some 10,000 sheets,- 
has been presented by his sister, Miss Williamson. Through the 
assistance of Airs. Beulah M. Rhoads and the Botanical Section, it 
was possible to purchase the valuable collection of 1900 ferns and 
fern allies made by Mr. W. A. Povser, wdiich adds greatly to the 
completeness of this section of the Academy’s herbarium. The 
Botanical Section also presented 800 sheets of California plants. 
Dr. Witmer Stone collected 500 sheets in South Carolina and Mr. 
