In the course of my survey of the present training in obstetrical nursing, I have met the warmest generosity on the part of the obstetrical and nursing staffs in all of the hospitals which I have visited. Accordingly, I find it very difficult to find adequate expression for my sense of gratitude to the doctors and nurses of the Montreal Maternity Hospital; the Burnside Obstetrical Department of the Toronto General Hospital; The Hospital of the University of Pennsylvania; Bellevue Hospital; The Long Island College Hospital; The Brooklyn Hospital; The Cleveland Maternity Hospital and to Dr. J. Whitridge Williams and Miss Elsie Lawler for making available the entire resources of the wards, clinics, laboratories and class and lecture rooms at Johns Hopkins Hospital. I wish to offer an expression of deepest possible appreciation to Dr. John W. Harris for the generosity with which he has given of his time, thought and wide experience in an effort to provide accurate and practical information, and to set a high standard of work and ideals for those nurses who would be influenced by this book. Having taught and lectured to nurses, as well as medical students, for years, Dr. Harris is in a position to give counsel and criticism of peculiar value to a book on obstetrical nursing and he has given these throughout the entire preparation of this book. Because of their concern with any effort to better the state of mothers and babies, I have been given suggestions, assistance and inspiration with the most selfless generosity by The Reverend Father John J. Burke; Dr. J. Clifton Edgar; Dr. Frederic W. Rice; Dr. J. P. Crozer Griffith; Dr. Caroline F. J. Rickards; Dr. Esther Loring Richards; Dr. E. V. McCollum; Miss Nina Simmonds and Dr. John R. Fraser. Among the many nurses with whom I have conferred, I have met a characteristic spirit of helpfulness which has expressed itself in their eager readiness to pass on to other nurses the benefits of their own training and experience. Those to whom I am especially indebted, for aid and suggestions, are Miss Calvin MacDonald; Mrs. Bessie Amerman Haasis; Miss Robina Stewart; Miss Caroline V. Barrett; Miss Katherine de Long; Miss Jean Gunn; Miss Mary E. Robinson; Miss Sara Cooper; Miss Laura F. Keesey; Miss Chelly Wasserberg; Miss Kate Madden; Mrs. Minnie S. Brown; Miss Anne Stevens; Miss Madge Allison and Miss Katherine Tucker. To Mrs. Elizabeth Porter Wyckoff I am under heavy obligation for most discriminating editorial assistance and for her farsighted criticisms toward increasing the clarity of the text. And I feel sure that the tender little poem on the miracle of motherhood, which Mrs. Elizabeth Newport Hepburn wrote expressly for this book, will be as warmly appreciated by my readers as it is by me.