NATURAL SCIENCES OF PHILADELPHIA. 269 



C. P. Sinnickson, C. P. Krauth, Joseph Hazard, Francis Garden 

 Smyth, M.D., John J. Thompson, J. Euen Loughlin, M.D., Thos. 

 M. Chatard, Geo. A. Koenig, Gideon E. Moore, Ph.D. 



The following were elected correspondents : 



J. W. Powell, of Washington, D. C, Capt. C. M. Scammon, of 

 San Francisco, Cal. 



On favorable report of the committees, the following paper was 

 ordered to be published : 



