North Ca(J$i* S'aLe Library 

 # Raleigh 



EXPERIMENTAL POLLINATION 



AN OUTLINE OF THE 



ECOLOGY OF FLOWERS AND INSECTS 



BY 



. a ca 



Frederic E. Clements and Frances L. Long 





North Q£M!ina State Librarv 



Published by the Carnegie Institution of Washington 

 Washington, 1923 



