1907.] NATURAL SCIENCES OF PHI LADKLI'III A. 575 



Recorder, Henry Skinner, M.D. 



Publication Committee, E. T. Cresson, 



J. II. Ridings. 



Respectfully submitted, 



Henry Skinner, 

 Conservator. 



The Botanical Section. 



During the past year the work of placing the sheets in species 

 covers has been completed for about three-fourths of the herbarium ; 

 ]->ressure of other work and lack of assistance have delayed pro,2Tess 

 for the time being; it is hoped, however, that the arrangement may be 

 completed during the coming year. 



Early in the year six new metal cases were received and have been 

 placed in the north gallery room for the accommodation of the ferns 

 and fern allies with the mosses and lichens, the change of arrangement 

 being required by the rapid growth of the local herbarium. 



Additions to the collections amount to about 5,500 sheets. Of these, 

 exchanges have been received from the New York Botanical Gardens 

 of 174, principally from the Bahamas, and the University of Pennsyl- 

 vania. 147 from Bermuda. Gifts have been received from the St. Louis 

 Botanical Gardens, 565 numbers of Lindheimer's Texan plants, and 

 about 750 from the following individuals: Edwin B. Bartram, Stew- 

 ardson Brown, Joseph Crawford, ]\Irs. Thomas P. Hill, Bayard Long, 

 C. F. Saunders, Benjamin H. Smith, Edward G. Vanatta, Samuel S. 

 Van Pelt and Charles S. Williamson. 



The Academy's expedition to Arizona and New I\Iexico under Dr. 

 Pilsbry added 238 sheets, and the following have been added by 

 purchase : By the Academy, a small collection of Surinam plants, and 

 by the Botanical Section, 425 sheets of the Pere Duss herbarium from 

 Martinique and Guadeloupe; from A. A. Pleller, 470 sheets of Cali- 

 fornia plants, and from C. G. Pringle, 300 Mexican plants. 



An increasing interest has been manifested during the year in the 

 meetings of the Philadelphia Botanical Club, its members having 

 added 2,500 sheets to the local herbarium. Acknowledgment is here 

 made of the efficient work rendered by its Curator, Mr. Samuel S. 

 Van Pelt. 



