4UU PROCEEDINGS OF THE ACADEMY OF [1885. 



December 8. 



The President, Dr. Leidy, in the chair. 



Thirty-one persons present. 



A paper entitled, " On some new species of Psocidae," by S. 

 Prank Aaron, was presented for publication. 



December 15. 



Mr. John H. Redfield in the chair. 



Twenty-five persons present. 



A paper entitled "Methods of Defence in Organisms," by Chas. 

 Morris, was presented for publication. 



The following was ordered to be printed : — 



