I read in your valuable journal of the 30th April, present volume, a new theo.-y of earthquakes, by a Mr. Drumrnond, vherein he endeavors to show the agency of electricity in producing them ...

According to the U.S. Geological Survey, there is an estimated 500,000 detectable earthquakes each year – "100,000 of those can be felt, and 100 of them cause damage." You may remember learning ...