Describes (1) several methods used in earthquake research, including P:S ratio velocity studies, dilatancy models; and (2) techniques for gathering base-line data for prediction using seismographs, tiltmeters, laser beams, magnetic field changes, folklore, animal behavior. The mysterious Palmdale (California) bulge is discussed. (CS)

Discusses economic, social and political consequences of earthquake prediction. Reviews impact of prediction on China's recent (February, 1975) earthquake. Diagrams a chain of likely economic consequences from predicting an earthquake. (CS)