34 STUDIES ON PATHOLOGIC OVA. 



It will be noted that certain specimens are referred to frequently, showing that 

 these have been of more general use than others. While these numbers may 

 seem somewhat confusing as they here appear, references to a given embryo are 

 found together in the Key, and this makes it quite easy to find the published 

 description of that embryo. Where the description is accompanied by illus- 

 trations, the specimen number is printed in bold type. A comprehensive view of 

 the entire bibliography shows that the papers are sometimes general but often 

 special in character. Whenever the line of thought is general, it is necessary to 

 consider the topic in many different embryos, and one topic is frequently repre- 

 sented by several collaborators. In other words, our department is a large 

 cooperative effort on the part of many contributors and collaborators. 



Our first papers were published in the Journal of Morphology and the Johns 

 Hopkins Hospital Bulletin and Reports, as well as in the foreign journals. We 

 had hoped at that time that the excellent Journal of Morphology would continue, 

 and that it would publish all of our best papers; but unfortunately it could not be 

 financed, and thus for a time we had no adequate outlet for our work. At the 

 Christmas (1900) meeting of the American Association of Anatomists, held in 

 Baltimore, a committee was named to consider the advisability of founding a new 

 journal for the publication of serious anatomical studies. In May following, 

 three trustees (Huntington, Mall, and Minot) were appointed to launch this 

 enterprise. In November of that year the first number of the American Journal 

 of Anatomy appeared, and at the next meeting of the Anatomists, held in Chicago, 

 it was voted to substitute the new journal for the Proceedings of the Association, 

 without additional expense to the members. In this way national support was at 

 once assured. A glance over the first ten volumes of the Journal discloses the 

 fact that about 30 per cent of the papers emanated from the Anatomical Labora- 

 tory of the Johns Hopkins Medical School. In other words, our collection was one 

 of the chief incentives for its publication. In rapid succession other journals were 

 established and published in Baltimore; first, the Journal of Experimental Zoology 

 in 1904, then the Anatomical Record in 1906. The stimulus given by these national 

 efforts brought about the revival of the Journal of Morphology by the Wistar 

 Institute in 1908, the opening volume consisting of a monograph entitled "A 

 study of the causes underlying the origin of human monsters" (Mall). These 

 serial publications mark the conversion of our studies of embryology from a local 

 to a national enterprise. 



About this time cooperative effort was regenerated by Professor Keibel of 

 Freiburg, and during one of his visits to Baltimore it was agreed that the leading 

 embryologists compile all known facts regarding human development. This com- 

 pilation was undertaken by 15 embryologists (1 Canadian, 1 Swiss, 2 German, 

 3 Austrian, and 8 American) and resulted in the production of a two-volume 

 work published in both German and English. One-half of this was produced by 

 the American contributors, and 6 of these 8 used our collection of embryos almost 

 exclusively. The work as a whole certainly does represent progress, and it has 

 also brought our collection into scientific position ; but the editors were not satisfied 



