PROCEEDINGS 



OF THE 



AxHERICAN PHILOSOPHICAL SOCIETY 



UEID AT riilLADElPnU FOE PROMOTING USEFUL KXOffLEDflE. 



Vol. XLI. Aphil-December, 1903. Xo. 171 



CONTENTS. 



PAGE 



The Geograpliical Distribution of Freshwater Decapods and its 



Bearing upon Ancient Geography. By Dr. A. E. Ortmann. 267 



Stated Meeting, October 3 400 



A Specialized Cocoon of lelea poli/j}hemus. By A. Radcliffe 



Grote 401 



Stated Meeting, October 17 40G 



Stated Meeting, November 7 40G 



Stated Meeting, November 21 406 



Stated Meeting, December 5 . , 406 



Specific Precipitins and their Medico-Legal Value in Distinguishing 



Human and Animal Blood. By Alfred Stengel 407 



Stated Meeting December 19 414 



philadelphia ; 



The American Philosophical Society, 



104 South Fifth Street. 



1902. 



