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The electric susceptibility of samples of ferrofluids subjected to a uniform magnetic field was measured. The electric susceptibility is dependent on the magnitude of the magnetic field and on the relative direction between the electric field and the magnetic field . 1) When is perpendicular to 2) When is parallel to These results have been interpreted as a magneto-electric directive effect. A model is proposed, based on the assumption that the magnetic particles are roughly ellipsoidal and conducting grains.