The first European Symposium on Electric Stimulation of Bone Growth and Repair was held in Brussels on May 20, 1976. The meeting was sponsored by the Parliamentary Assembly of the Council of Europe, the Interdisciplinary Bone Biomechanics Unit of the University of Brussels, and the Department of Applied Electronics, Chalmers University of Technology, Goteborg. The aims of the Symposium were to create and organize communica tion between European laboratories in the field of electric stimulation of healing processes and generally to promote international collaboration in this field. The Organizing Committee Spring 1978 F. BURNY, Brussels E. HERBST, Goteborg M. HINSENKAMP, Brussels Contents Electric Stimulation of Bone Growth and Repair: A Review of Different Stimulation Methods E. HERBST. With 5 Figures … . *. **. . *… … … . . *… … … . . Four-Point Measurement of the Impedance of Bone in Vivo W. SANSEN, F. De DIJCKER, S. STAN, and J. C. MULIER t Jith 4 Figures … … … … … … . *… … … … … *… … … 15 In Vitro Study of Electric Impedance of Bone B. DURAND, P. CHRISTEL, and J. ASSAILLY. With 5 Figures … . 19 Achievements and Discrepancies in Understanding Bone Electric Phenomena T. CIESZYNSKI. With 2 Figures … … … … … … … … … … 25 Physicochemical Effect of an Electric Potential on Bone Growth R. WOLLAST, M. HINSENKAMP, and F. BURNY. With 4 Figures … * 29 Influence of Magnetic Fields on Growth and Regeneration in Organ Culture H. GERBER, J. CORDEY, and S. M. PERREN. With 2 Figures … …