The first part of the publication presented the conditions in which congresses and meetings of medical and naturalist milieus from all the lands of partitioned Poland were organized. The present study deals with contacts among the remaining scientific and professional groups and aims at showing the development of ties between scientific and socio-professional milieus from the different lands of partitioned Poland. It has been ascertained that the congresses became a major and permanent meeting place for scientists and specialists in different fields from all over Poland, as well as a forum for the exchange of professional experiences and the presentation of achievements in the respective domains. This is corroborated by the cyclical nature of the majority of such meetings (apart from physicians and naturalists, regular meetings were held by technicians, lawyers and economists, as well as historians and historians of literature), by the ample participation in such meeting of representatives from all the three partitions and of emigres, and finally also by the subject-matter raised at the meetings. Key words: Polish intelligentsia; the turn of the 19th and 20th century; learned societies; scientific congresses.