1881.] 



NATURAL SCIENCES OF PHILADELPHIA. 



491 



May 2, 1881. — Lecture by Dr. Hunt upon Some Comparative 

 Illustrations of Breathing Orgaus. 



May 17, 1881. — Observations upon the best methods of pre- 

 paring Crystals of Hippuric Acid. 



June 6, 1881. — Lecture by Dr. Hunt upon Growth in the Skin 

 and in some Trees alike. 



Nov. 16 and 17. — The Annual Exhibition was held, and was 

 attended by a large and interested assembly. 



Dec. 5, 1881. — At the annual election the following gentlemen 

 were elected officers for the ensuing year : 



Director, 



Vice-Director^ 



Corresponding Secretary, 



Conservator^ 



Treasurer, . 



Recorder, 



Committee of Auditors, 



Committee of Curators, 

 Committee on Business, 



Dr. R. S. Kenderdine. 

 Dr. Charles Schaetfer. 

 Dr. L, Ashley Faught. 

 Mr, Charles P. Perot. 

 Dr. Isaac Norris. 

 Dr. Robert J. Hess. 

 Mr. J. C. Wilson, 

 Mr. S. L. Fox, 

 Dr. A. G. Reed. 

 Mr. C. P. Perot, 

 Mr. E. Pennock. 

 Dr. C. Schaeffer, 

 Dr. R. J. Hess, 

 Mr. C. P. Perot, 

 Dr. A. G. Reed, 

 Mr. S. L. Fox. 



Respectfully submitted, 



Robert J. Hess, M. D. 



Becorder. 



REPORT OF THE CONCHOLOGICAL ^CTION. 



The Recorder of the Conchological Section respectfully reports 

 that during 1881, Mr. Rafael Arango, Prof. Angelo Heilprin, Dr. 

 R. E. C. Stearns and Mr. Henry Hemphill have prepared papers, 

 which have been accepted and published in the Proceedings of the 

 Academy. Besides these, verbal communications have been made 



