with the principles of the Bacteriological Code of Nomenclature, and it should tend to stabilize the nomenclature of this group.
In closing this discussion of the revised classification, it should again be emphasized that it has been developed as a result of a study of the ideas which previous workers have expressed in preparing the outlines that they have suggested. Previous workers have laid what appears, with our present knowledge, to be a satisfactory foundation on which to build. The introduction of new ideas has come about largely as a result of continuous study of the literature and conferences with our colleagues, including the specialists who have contributed and are contributing so much to the knowledge that has accumulated in past years. A generous share of the credit for the things that constitute a real advance in our knowledge should go to these specialists. Where the classification here presented has defects, it is to be hoped that they will be discovered promptly and eliminated.
