  The differential cross section of Delbr\"{u}ck scattering is measured on a
bismuth germanate $Bi_4Ge_3O_{12}$ target at photon energies $140 - 450 MeV$
and scattering angles $2.6 - 16.6 mrad$. A good agreement with the theoretical
results, obtained exactly in a Coulomb field, is found.
