It has been proved on one occasion that a flash of lightning must have struck a church —St. George's, Leicester, England,—with a force equal to more than 12,000 horse power. A single horse power is equal to raising 32,000 pounds one foot high in one minute. The force of the lightning, therefore, was equal to 384,000,000 pounds raised one foot high in one minute. This is equal to the power of twelve of our hlrgest steamers, having 24 engines of 500 horse power each.