SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 82, NUMBER 9 



THE FURTHER AND FINAL RESEARCHES OF 

 JOSEPH JACKSON LISTER UPON THE REPRO- 

 DUCTIVE PROCESSES OF POLYSTOMELLA 

 CRISPA (LINNE) 



(An Unpublished Paper Completed and Edited from 

 His Note-Books) 



(With Seven Plates) 



BY 



EDWARD HERON-ALLEN, F.R.S. 





(Publication 3067) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



NOVEMBER 26, 1930 



