CONTENTS 



Original Papers 



Pace 



Geology. — On the terms aphrolith and dennolith, T. A. Jaggar 277 



Genetics. — Observed changes in hereditary characters in relation to evolu- 

 tion. H. S. Jennings 281 



Ethnology. — The Chitimacha of Bayou La Fourche, Louisiana. David I. 



Bushnell, Jr 302 



Abstracts 

 Geology 308 



Proceedings 



The Geological Society of Washington 309 



The Botanical Society of Washington 313 



The Biological Society of Washington 315 



