MARK ANNIVERSARY VOLUME. xi 



EDWIN MEAD WILCOX, Professor of Vegetable Physiology and Pathology, Alabama 

 Polytechnic Institute, Auburn, Ala. 



WILLIAM ALBERT WILLARD, Adjunct Professor of Zoology, University of Nebraska, 

 Lincoln, Nebr. 



STEPHEN RIGGS WILLIAMS, Professor of Biology and Geology, Miami University, 

 Oxford, Ohio. 



JOHN GERRISH WOOD, Superintendent of the Twine Mills of the McCormick Harvester 

 Machine Company, Chicago, 111. 



FREDERICK ADAMS WOODS, Physician, Brookline, Mass. 



WILLIAM MCMICHAEL WOODWORTH, Keeper of the Museum of Comparative Zoology, 

 Harvard University, Cambridge, Mass. 



ALFRED WORCESTER, Physician, Waltham, Mass. 



ROBERT MEARNS YERKES, Instructor in Psychology, Harvard University, Cam- 

 bridge, Mass. 



