One of the most successful local organizations in the United States is the Chicago Medical Society, the medical society for Cook County, and its working methods and accomplishments may be cited as examples that should be followed in other large cities. Among its good features is the weekly<i>Bulletin</i>which it publishes. This contains the programs of the weekly meetings of the central body and of the monthly meetings of its branches and affiliated societies, as well as much other matter of interest. It is issued as second class matter, and so can be published at less expense per member than could a simple postal card. The last issue is a special number, most of which has been prepared by the organization committee to call attention to those who are not members to the work the society is doing and to the advantages of membership. Two years after the reorganization