662 • proceedings of the academy of [dec, 



Vertebrate Fossils. 



Much progress has been made in bringhig the collections in this 

 department into order. Mr. J. A. G. Eehn 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 yesiv 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 Mrs. 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. Poyser, which 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. 



