[UNIVERSITY OF RHODE ISLAND 



Kj^gstqn, U, J, 02881 



LECTUR 

 BIOLOG 



ICAL SCIENCES 





presented by 

 NORMAN G. ANDERSON 



THEODOSIUS DOBZHANSKY 



J. N. SPUHLER 



G. LEDYARD STEBBINS 



C. H. WADDINGTON 



A symposium held December 3-5, 

 1959, sponsored jointly by 

 The University of Tennessee 

 Chapter of Sigma Xi and the 

 Biology Division, Oak Ridge 

 National Laboratory 



edited by 

 J. IVES TOWNSEND 



THE UNIVi HTY OF TENNESSEE PRESS 



KNOXVILLE, 1963 



