Part 3

These impediments exist no longer, and the enormous power for good that must accrue to every potential mother possessing this knowledge far outweighs any possible disadvantages resulting from publicity. The author looks for her reward in the immeasurable benefit that others will derive from her unflagging inquiry and research.

The generous and self-sacrificing assistance that my wife has invariably afforded me throughout my public career renders insignificant by comparison, but none the less a mere act of gratitude, any contribution I have been able to make by way of encouragement in this, her life’s work.

J. M. E.

January, 1925.

CONTENTS

PAGE

PREFACE v

INTRODUCTION xxiii

I.—SEX DETERMINATION 3

II.—THE EUGENIC POINT OF VIEW 11

III.—THE SELECTION OF THE FIT 20

IV.—THE MOTHERS’ RESPONSIBILITY 25

V.—PREMATURES 37

VI.—THE SUPERFLUOUS FEMALE 51

VII.—STERILITY 65

VIII.—SEX-CAUSATION 77

IX.—FOR A BOY 86

X.—THE “BLANK WEEK” 97

XI.—FOR A GIRL 106

XII.—THE FREAK OVARY 111

XIII.—LATERAL DECUBITUS 120

XIV.—SIGNS AND SYMPTOMS: AFTER-EFFECTS 131

XV.—SIDE-THEORY 141

XVI.—TWINS OF MIXED SEXES 152

XVII.—“BEFORE OR AFTER” 163

XVIII.—THE LENGTH OF GESTATION 173

APPENDIX 183

SEX AT CHOICE