IS PROCEEDINGS OF THE ACADEMY OF [1881. 



MA'kCH 1. 



The President, Dr. Ruschenberger, in the chair. 

 Eighteen persons present. 



March 8. 

 The President, Dr. Ruschenberger, in the chair. 

 Fifty-eight persons present. 



A paper entitled " On the Structure, Affinities and Species of 

 Scolopendrella," by J. A. Ryder, was presented for publication. 



Prof. Angelo Heilprin delivered the introductory to his course 

 of lectures on Invertebrate Paleontology. 



March 15. 



The President, Dr. Ruschenberger, in the chair. 



Prof. Henry Carvill Lewis delivered the introductor3- to his 

 course of lectures on Mineralogy. 



The following was ordered to be printed : — 



