of Mines and Technology; William A. Clemens and Richard Estes, 

 University of California; Dr. Gordon Y. Craig, University of Edin- 

 burgh (Scotland); Robert C. Feuer, University of Michigan; Dr. 

 Kurt Frederiksen, Geological Survey of Sweden (Stockholm); 



Donald J. Herold, Davenport (Iowa) Public Museum; Dr. Claude 

 Hibbard, University of Michigan; Dr. Marie L. Hopkins, Idaho 

 State College; Dr. Nicholas Hotton III, United States National 

 Museum; Dr. L. S. B. Leakey, Coryndon Memorial Museum (Nai- 

 robi, Kenya); Dr. Ernest Lundelius, Jr., University of Texas; Mrs. 

 Doris Macnaughton, McGill University (Montreal); John H. Os- 

 trom, Beloit College; Roy Reinhart, Miami University (Ohio); 

 Howard Sanders, Woods Hole Oceanographic Institute; Dr. Robert 

 E. Sloan, University of Minnesota; Dr. Thompson M. Stout, Uni- 

 versity of Nebraska; Dr. Georges Vandebroek, University de Lou- 

 vaine (Belgium) ; and Dr. T. Stanley Westoll, University of Durham 

 (England). 



Visiting zoologists included Dr. John W. Aldrich and Dr. Daniel 

 M. Cohen, United States Fish and Wildlife Service (Washington, 

 D.C.); Donald H. Baepler, Robert E. Elbel, Dr. Cluff Hopla, and 

 W. H. McCarley, University of Oklahoma; George Barker, Mt. 

 Pleasant, South Carolina; Dr. Charles 0. Bechtol, University of 

 California at Los Angeles; Dr. Edward Becker, Dr. Henry Howden, 

 and Dr. B. V. Peterson, Canada Department of Agriculture; Dr. 

 William H. Behle, University of Utah; Dr. S. Stillman Berry, Red- 

 lands, California; Dr. Argentino Bonnetto, Buenos Aires; Professor 

 Jose* I. Borrero, Bogota, Colombia; Miss Margaret G. Bradbury, 

 Hopkins Marine Station; John Burns, William Z. Lidicker, Jr., 

 and Dr. Frank A. Pitelka, University of California; Dr. Joseph 

 Camin, Dr. William Duellman, and Carl Rettenmeyer, University 

 of Kansas; George Campbell, Detroit; Dr. Nell B. Causey, Univer- 

 sity of Arkansas; 



Jorgen Dahl, Department of Fisheries, Charlottenlund, Denmark; 

 Dr. Rezneat M. Darnell, Marquette University; Miss Mercedes 

 Delfinado, Manila; Dr. Clarence Dineen, St. Mary's College; Robert 

 C. Feuer, Dr. Theodore Hubbell, Douglas Robinson, and Dr. Robert 

 W. Storer, University of Michigan; Dr. Robert L. Fleming, Kath- 

 mandu, Nepal; W. I. Follett, California Academy of Sciences; Dr. 

 M. J. Fouquette, Dr. Coleman Goin, and Dr. Rodger D. Mitchell, 

 University of Florida; Dr. Herbert Friedmann, United States Na- 

 tional Museum; Jose* M. Gallardo, Museo Nacional (Buenos Aires); 

 Dr. Carl Gans, University of Buffalo; Arnold Gluge, University of 

 Southern California; Dr. Robert Graves, Flint (Michigan) Junior 

 College; Dr. Georg Haas and Professor Oskar Theodor, Hebrew 



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