UoaAC^ PROCEEDINGS 



^ ^ OF THE 



AMERICAN PHILOSOPHICAL SOCIETY 



HELD AT PHILADELPHIA 

 FOR PROMOTING USEFUL KNOWLEDGE 



Vol. XLIIL October-December, 1904. No. 178. 



CONTENTS. 



PAGB 



An Attempt to Correlate the Marine with the Non-Marine For- 

 mations of the Middle West. By J. B. Hatcher 341 



The Morphological Superiority of the Female Sex. By Thomas H. 



Montgomery, Jr., Ph.D 365 



Stated Meeting f October 21 380 



Stated Meeting, November 4 380 



Stated Meeting, November 18 , 380 



Electrolytic Calcium. By Joseph H. Goodwin 381 



Stated Meeting^ December 2 393 



The Origin of the Markings of Organisms (Poecilogenesis) Due to 

 the Physical Rather than to the Biological Environment ; 

 With Criticisms of the Bates-Miiller Hypotheses. By 



Alpheus S. Packard, LL.D 393 



Stattd Meeting, December 16 450 



Description and Figure of Coregonus nelsonii Bean (with plates). 



By Henry W. Fowler .451 



Index to Volume XLIII 457 



philadelphia : 



The American Philosophical Sooibtt, 



104 South Fifth Street. 



1904. 



