Do earthquakes succeed one another in any definite direction? Is there any definite order in which they occur? The epicenters for about six years were plotted month by month according to time of occurrence on Mercator’s projection. In most cases succeeding epicenters progressed from west to east. In some cases the progression was striking; but there were frequent cases of steady progression from east to west. The results as studied so far only warrant the conclusion “There is a slight tendency for succeeding epicenters to progress from west to east rather than vice versa.”

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