overconcentrated

— Sometimes, too, though there be no variation of direction on the horizon, there may nevertheless be a variation of the dip, to wit, when either in a direct meridian line, i.e., on the meridian itself, there projects some magnetically powerful earthmass, or when such elevations have less force than is called for by the general constitution of the globe, or when the energy is overconcentrated in one part, and in another is diffused, as we may see in the Atlantic Ocean.