CHAUNCEY P. COLGROVE, A.M., Sc.D. HEAD OF THE DEPARTMENT OF PROFESSIONAL INSTRUCTION IN THE IOWA STATE CHARLES SCRIBNER'S SONS NEW YORK CHICAGO BOSTON ANSFER OS 1821 371 ل TO MY WIFE, EMMA RIDLEY COLGROVE, FORMERLY PROFESSOR WHOSE HELP AND SYMPATHY HAVE BEEN MY CONSTANT EN- AFFECTIONATELY DEDICATED 38444 |