4'/ 



T7<l 

 M 



4r 





APRIL, 1918. 



s. 



EHX&MOLOGIGAL NEWS 



Vol. XXIX. 



Sen- 



No. 4, 



Bexijatnin Dann Walsh 

 i808-i869. 



PHILIP P. CALVERT, Ph.D., Editor. 

 E. T. CRESSON, Jr., Associate Editor, 



HENRY SKINNER, M.D., Sc.D,, Editor Emeritus. 



EZ«tA T. CRESSON, 

 PRU.IP LAURENT, 



Advisory Committee: 



BRICH DAECKB. 



.J. A. -G. REBJf. 

 «. W. WENZSr- 



PHILADELPHIA : 



The Academy of Natural Sciences, 



logan square. 



Entered at the Philadelphia Post-Office as Second-Class Matter. 



