Treaty Name:
Convention of Saint-Germain-En-Laye Revising the General Act of Berlin, February 26,1885, and the General Act and Declaration of Brussels, July 2,1890 (relating to Congo River Basin)
Notes:
https://treaties.un.org/doc/Publication/UNTS/LON/Volume%208/v8.pdf and http://www.dekamer.be/digidoc/DPS/K3069/K30690992/K30690992.PDF (shows ratification date for Belgium)