ILLUSTRATIONS 



PAGE 



GLACIAL MAP OF NORTH AMERICA 68 



GENERAL SURVEY SOIL MAP OF ILLINOIS 76 



A MAN OF SCIENCE: EUGENE WOLDEMAR HILGARD 102 



MAP OF UNITED STATES SOIL PROVINCES 116 



NITROGEN FIXATION BY CLOVER 218 



TOPOGRAPHIC MAP OF OHIO EXPERIMENT FIELD 252 



DIRECTOR CHARLES E. THORNE 254 



SIR JOHN BENNET LAWES 342 



SIR JOSEPH HENRY GILBERT 344 



TURNIPS ON AGDELL FIELD, 1908 362 



DIRECTOR A. D. HALL 408 



DIRECTOR EDWARD B. VOORHEES 517 



RAINFALL CHART OF NORTH PLATTE, NEBRASKA ...... 580 



RAINFALL MAP OF THE UNITED STATES 582 



