CONTENTS 
Page 
FOREWORD «3 
CHAPTER I 
THE PROBLEM . “23 
The Nature of Modern Migration . ee . 23 
Migration and the Supply of Labor . . a, B23 
The Long-Time and Short-Time Points of View.. 3 
Migration and Business Cycles . : : oe ; 
The Questions for Solution . 3 : ; . . 
The Conflicting Interpretations . : Re 
The safety-valve theory . : Coed 
The maladjustment theory Ly 
Summary of the Contents of Succeeding Chapters 27 
CHAPTER II 
S1GNIFICANT FEATURES OF MIGRATION . 29 
Purpose of Chapter. . . . i 80. 209 
Sources, Terminology, and Comprehensiveness of Migration Statistics - 29 
Pertinent Features of Migration to and from the United States . 33 
Violence of the Major Fluctuations . . :  . 33 
Marked Seasonal Variation igor JI 
Heavy Emigration . . . J37 
Preponderance of Males . : wi 
Country of Origin—the “Old” and “New” Immigration Al 
Leading Immigrant Races or Peoples . ] . 4 
Racial Differences in the Ratio of Emigrants to Immigrants . #4 
Occupations of Immigrants : NF, R45 
Occupational Changes. . . ad? 
The Volume of Immigration Relative to Population . 48 
Chapter Summary . . 53 
CHAPTER III 
EMPLOYMENT OPPORTUNITIES FOR IMMIGRANTS a, 154 
Significance of a Measure of Employment Opportunity Joy iS4 
The Ideal Measure . i 35 
Types of Employment Statistics . 55 
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