The Fourth Symposium on Earthquake Engineering will be held at the University of Roorkee, Roorkee, India, in November 1970. The symposium will deal with the following themes: Structural Response and Design of Structures for Earthquake and Blast Force, Design of Dams and Appurtenant Works in Earthquake Zones, Housing in Seismic Zones and Damage during Recent Earthquakes, Soil and Foundation Behavior during Earthquakes, Instruments for Earthquake Engineering and Seismological Studies, Seismicity, Wave Propagation and Ground Motion, Seismo-Tectonic Studies of Seismic Regions, Observation of Earthquake Damage and Determination of Isoseismal and Iso-Force Lines.