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.