FOREWORD xi 



Julius E. Olson of the University of Wisconsin, who 

 has also, since the work of preparing this edition 

 was begun, followed its progress with helpful in- 

 terest. Professors G. T. Flom and A. H. Lybyer of 

 the University of Illinois, and Professor W. H. 

 Schofield of Harvard University, have read the 

 manuscript in whole or part and have contributed 

 many valuable suggestions. My wife, Lillian May 

 Larson, has assisted in a great variety of ways, 

 as in all my work. Dr. H. G. Leach of the Ameri- 

 can-Scandinavian Foundation has read the proof 

 sheets of the entire volume and has suggested 

 many improvements in the text. To all these 

 persons I wish to express my thanks. I am also 

 deeply indebted to the trustees of the American- 

 Scandinavian Foundation whose generosity has 

 made it possible to publish the work at this time. 



L. M. L, 



University of Illinois, 

 August, 1917. 



