686 PROCEEDINGS OP THE ACADEMY OF [Dec, 



about the same length of time in Panama and Jamaica, adding about 

 S00 sheets, and more than 100 sheets from Jamaica and Cuba have 

 been received in exchange from the New York Botanical Garden. 

 On the Academy's expedition to Arizona and New Mexico, in the 

 latter part of the year, Dr. Pilsbry collected nearly 800 sheets of 

 plants, and 640 sheets, principally from Nevada and California, have 

 been purchased by the Section from Mr. A. A. Heller. Other collec- 

 tions, aggregating about 400 sheets, have been received from B. H. 

 Smith, Dr. C. D. Fretz, Witmer Stone and Charles S. Williamson. 



The work in the local herbarium has been carried on with greater 

 effect than during any previous year, the 3,511 sheets added by the 

 members of the Philadelphia Botanical Club having been mounted and 

 distributed by Mr. Samuel S. Van Pelt. Much valuable work, espe- 

 cially in studying some of the more complex groups, has been done by 

 Mr. Bayard Long. 



During the year a small printing outfit was added to the equipment 

 of the herbarium, resulting in the saving of much time and labor in 

 label writing, besides insuring uniformity in style and size of labels. 

 Acknowledgment is here made of the continued assistance in the 

 herbarium during the year of Miss Ada Allen. 



At the annual meeting of the Section, held on December 6, the 

 following were elected as officers for the year : 



Director Benjamin H. Smith. 



Vice-Director Joseph Crawford. 



Secretary and Recorder Charles S. Williamson. 



Treasurer and Conservator Stewardson Brown. 



Respectfully submitted, 



Stewards* >n Brown, 



Conservator. 



MlNERALOGICAL AND GEOLOGICAL SECTION. 



The Section has this year held five meetings, besides meeting once 

 (May 17) in conjunction with the Academy. Communications were 

 made by Mr. S. L. Schumo, with his own photographic illustrations, 

 on pot-holes at the Falls of Schuylkill; by Prof. Chester A. Reeds, on 

 the geology of the Arbuckle Mountains, Oklahoma; by Dr. Edgar T. 

 Wherry, on copper deposits of Franklin and Adams Counties, Pa., 

 besides various shorter communications and discussions. 



There were seven field excursions of the Section, with an average 

 attendance of about twenty-five. The excursions visited: (1) The 



