i.- 



ywc k*w york 



The Chicago Academy of Sciences 



SPECIAL PUBLICATION NO. 3 



THE LYMNLEIDiE OF 



NORTH AND MIDDLE AMERICA 

 recent and fossil 



By 



FRANK COLLINS BAKER 



CURATOR OF THE CHICAGO ACADEMY OF SCIENCES 



CHICAGO 



Published by the Academy 

 February 15, 1911 



