Dr. Charles Heimsch, Miami University (Ohio); Dr. C. B. Heiser, 

 Jr., Indiana University; A. J. Hendricks, Southern Illinois Univer- 

 sity; Professor R. L. Hulbary, State University of Iowa; Dr. Juan 

 Hunziker, Buenos Aires, Argentina; Dr. Hugh litis, Dennis Knight, 

 Dr. Jonathan Sauer, and P. F. Stickney, University of Wisconsin; 

 R. 0. Kapp, Alma, Alma College; Dr. David D. Keck, National 

 Science Foundation (Washington, D. C.) ; Hari Kishore, Simla, India; 

 Dr. R. M. Kosanke, Illinois Geological Survey; Dr. B. F. Kukachka, 

 Forest Products Laboratory (Wisconsin); Professor R. J. Kuster, 

 Valparaiso University; Dr. Ida Langman, University of Pennsyl- 

 vania; Dr. G. A. Leisman, Kansas State Teachers College; Dr. 

 Harlan Lewis, University of California at Los Angeles; Robert Long, 

 University of Massachusetts; Dr. T. G. Mahabale, University of 

 Poona (India); Dr. P. N. Mehra, Pan jab University (India); Dr. 

 Eugenia Navas, University of Chile; Bernard Nebel, Earlham Col- 

 lege; Harold Nogle, Port Arthur, Texas; Dr. Frederick Pannier, 

 Universidad Central (Venezuela); H. W. Pfeifer and Dr. R. E. 

 Woodson, Missouri Botanical Garden; Dr. R. W. Pohl, Iowa State 

 College; Dr. R. P. Quinn, Abbott Laboratories (Chicago); Dr. N. W. 

 Radforth, McMaster University; Dr. Dillwyn Rogers, Augustana 

 College; Dr. Velva Rudd, United States National Museum; Dr. E. 

 D. Rudolph, Wellesley College; 



Dr. Linna Azhyadee Salom, San Jose\ Costa Rica; Rolf Schafer, 

 University of Gottingen (West Germany); Roland Schoenike, Uni- 

 versity of Minnesota; A. Schoen wetter, University of Arizona; Dr. 

 J. M. Schopf, United States Geological Survey (Ohio State Uni- 

 versity); Dr. R. E. Schultes, Harvard University; Dr. Olof Selling, 

 Naturhistoriska Riksmuseum (Stockholm); David G. Sharpe, Put- 

 nam, Connecticut; Rev. Urban J. Siegrist, St. Joseph College; Dr. 

 Anton Slysh, Syracuse University; Tom Soderstrom, Yale University; 

 Allen Stevenson, Hunt Library (Pittsburgh); Dr. K. R. Surange, 

 Sahni Institute of Paleobotany (Lucknow, India); Dr. A. F. Szcza- 

 winski, Museum of Natural History (Vancouver); Miss Betty Ven- 

 rick, Pomona College; Dante Ventresca, Marion College; Dr. Grady 

 L. Webster, Purdue University; Dr. Louis O. Williams, Plant In- 

 dustry Station (Beltsville, Maryland); Archie F. Wilson, Summit, 

 New Jersey; and Dr. D. 0. Wolfenbarger, University of Florida. 



Visiting geologists included Dr. Walter Auffenberg, University 

 of Florida; Dr. Robert S. Bader, University of Illinois (Urbana); 

 Dr. Charles Bechtol, University of California at Los Angeles; Craig C. 

 Black, Dr. George Gaylord Simpson, and Dr. Ernest E. Williams, 

 Museum of Comparative Zoology; H. J. Champagne, National Mu- 

 seum of Canada (Ottawa); Dr. John Clark, South Dakota School 



87 



