July 23. 



Price 3.?. 



THE JOURNAL 



OF 



THE LINNEAN SOCIETY. 



Vol. XIX. 



ZOOLOGY. 



Xo. 115. 



CONTENTS. 



Physiological Selection; an Additioual Suggestion on the 

 Origin of Species. By GtEGEge J. Eomanes, M.A., LL.D., 

 F.E.S., F.L.S , 337 



LONDON: 



SOLD AT THE SOCIETY'S APAETMENTS, BURLINGTON HOl'SE, 

 PICCADILLY, W., 



AND BY 



LONGMANS, GEEEN, AND CO., 



AND 



WILLIAMS AND NOEGATE. 

 1886. 



