PROFESSOR JULIUS STIEGLITZ OF THE UNIVERSITY OF CHICAGO

THIS VOLUME IS GRATEFULLY DEDICATED




CONTENTS


I THREE PERIODS OF PROGRESS 3

II NITROGEN 14

III FEEDING THE SOIL 37

IV COAL-TAR COLORS 60

V SYNTHETIC PERFUMES AND FLAVORS 93

VI CELLULOSE 110

VII SYNTHETIC PLASTICS 128

VIII THE RACE FOR RUBBER 145

IX THE RIVAL SUGARS 164

X WHAT COMES FROM CORN 181