The differential cross section of Delbruck scattering is measured on a
bismuth germanate (Bi4Ge3O12) target at photon energies 140-450 MeV a
nd scattering angles 2.6-16.6 mrad. A good agreement with the theoreti
cal results, obtained exactly in a Coulomb field, is found. [S0556-281
3(98)02411-X].