■n« LuESTHER T. MERTZ UBRfiRY 

 THE NEW YORK BOTANICAL OARDEN 



THE INTERNATIONAL SCIENTIFIC SERIES 



THE ORIGIN OF 

 FLORAL STRUCTURES 



THROUGH INSECT AND OTHER AGENCIES 



BY THE 



REV. GEORGE HEINSLOW, M. A., F. L. S., F. G. S. 



PROFESSOR OF BOTANY, QUEEN's COLLEGE, AND 



LECTURER TO ST. BARTHOLOMEW'S HOSPITAL MEDICAL SCHOOL, LONDON 



AUTHOR OF "evolution AND RELIGION," "CHRISTIAN BELIEFS RECONSIDERED,' 



"botany FOR CHILDREN," "FLORAL DISSECTIONS," ETC. 



WITH EIGHTY-EIGHT ILLUSTRATIONS 



NEW YORK 



D. APPLETON AND COMPANY 



1888 



