X List of Contributors 



Roland K. Meyer, Department of Zoology, University of Wisconsin, Madison, 

 Wisconsin 



Andrew V. Nalbandov, Department of Animal Science, University of Illinois, 



Urbana, Illinois 

 Warren O. Nelson, The Population Council, Inc., The Rockefeller Institute, 



New York 



Robert W. Noyes, Department of Obstetrics and Gynecology, Stanford University 

 School of Medicine, Palo Alto, California 



Gregory Pincus, Worcester Institute for Experimental Biology, Shrewsbury, 

 Massachusetts 



Duncan E. Reid, Department of Obstetrics and Gynecology, Harvard Medical 

 School, and Boston Lying-in Hospital, Boston, Massachusetts 



John Rock, Rock Reproductive Study Center, Brookline, Massachusetts 



Charles H. Sawyer, Department of Anatomy, University of California Medical 

 Center, Los Angeles, California 



Sheldon Segal, The Population Council, Inc., The Rockefeller Institute, New York 



Miriam E. Simpson, Institute of Experimental Biology, University of California, 

 Berkeley, California 



Somers H. Sturgis, Department of Obstetrics and Gynecology, Harvard Medical 

 School, and Peter Bent Brigham Hospital, Boston, Massachusetts 



Claude A. Villee, Department of Biological Chemistry, Harvard Medical School, 

 Boston, Massachusetts 



