COLLABORATORS 



EDWARD ASAHEL BIRGE, Dean of the College of Letters and Science in the University 



of Wisconsin 



NATHAN AUGUSTUS COBB, United States Department of Agriculture 

 WESLEY ROSWELL COE, Professor of Biology in the Sheffield Scientific School of Yale 



University 



HERBERT WILLIAM CONN, Late Professor of Biology, Wesleyan University 

 CHARLES BENEDICT DAVENPORT, Director of the Station for Experimental Evolution, 



Cold Spring Harbor, Long Island, N. Y. 

 CHARLES HOWARD EDMONDSON, Assistant Professor of Zoology in the University of 



Oregon 



CARL H. EIGENMANN, Professor of Zoology in Indiana University 

 HERBERT SPENCER JENNINGS, Professor of Zoology in Johns Hopkins University 

 EDWIN OAKES JORDAN, Professor of Bacteriology in the University of Chicago 

 CHARLES DWIGHT MARSH, United States Department of Agriculture 

 JOHN PERCY MOORE, Professor of Zoology in the University of Pennsylvania 

 JAMES GEORGE NEEDHAM, Professor of Limnology in Cornell University 

 EDGAR WILLIAM OLIVE, Curator of the Brooklyn Botanic Garden 

 ARNOLD EDWARD ORTMANN, Curator of Invertebrate Zoology in the Carnegie Museum, 



Pittsburgh 



ARTHUR SPERRY PEARSE, Associate Professor of Zoology in the University of Wiscon- 

 sin 



RAYMOND HAINES POND, Late Professor of Botany in the Texas Agricultural College 

 EDWARD POTTS, Late of Meadville, Pa. 



JACOB ELLSWORTH REIGHARD, Professor of Zoology in the University of Michigan 

 RICHARD WORTHY SHARPE, Instructor in Biology in the Dewitt Clinton High School, 



New York City 



VICTOR ERNEST SHELFORD, Assistant Professor of Zoology in the University of Illinois 

 FRANK SMITH, Professor of Zoology in the University of Illinois 

 JULIA WARNER SNOW, Associate Professor of Botany in Smith College 

 CAROLINE EFFIE STRINGER, Head of the Department of Biology in the Omaha High 



School 



BRYANT WALKER, Detroit, Mich. 

 ROBERT HENRY WOLCOTT, Professor of Zoology in the University of Nebraska. 



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