As we contemplate constantly increasing our data, we shall be
glad to receive information of any unpublished anomalous or
curious cases, either of the past or in the future.

For many courtesies most generously extended in aiding our
research-work we wish, among others, to acknowledge our especial
gratitude and indebtedness to the officers and assistants of the
Surgeon-General's Library at Washington, D.C., the Library of the
Royal College of Surgeons of London, the Library of the British
Museum, the Library of the British Medical Association, the
Bibliotheque de Faculte de Medecine de Paris, the Bibliotheque
Nationale, and the Library of the College of Physicians of
Philadelphia.

GEORGE M. GOULD.
PHILADELPHIA, October, 1896. WALTER L. PYLE.



TABLE OF CONTENTS.

CHAPTER PAGES
I. GENETIC ANOMALIES . . . . . . . . . . . . . . . . . . .17-49

II. PRENATAL ANOMALIES . . . . . . . . . . . . . . . . . 50-112

III. OBSTETRIC ANOMALIES . . . . . . . . . . . . . . . 113-143

IV. PROLIFICITY . . . . . . . . . . . . . . . . . . . . 144-160