In a previous paper the writer presented a summary of facts and conclusions arrived at after studying the histories of 97 cases of malformation of the uterus and vagina due to defective development of the ducts of Müller. He has since collected and tabulated the histories of 224 more cases, all obtained from what he believes to be reliable sources. These, together with the 97 reported in the former article, comprise all the cases, except a very few not at the time obtainable, to be found in the library of the Surgeon- General's office at Washington, and the writer thinks will furnish us data for arriving at correct conclusions.
The tables were originally designed for publication, but are found too voluminous; but as they contain many points of interest to the general practitioner, and some of them are at variance with statements made by writers of acknowledged authority, the writer