  Theoretical proposals of scaling laws for the differential elastic scattering
cross sections of protons are confronted with experimental data over a wide
energy range. Different combinations of the transferred momentum and energy
resulting from the solution of the definite partial differential equation are
attempted as scaling variables. Reasonable scaling of the differential cross
sections in the diffraction cone has been shown for one of these variables. The
violation of the geometrical scaling is ascribed to the increase of the proton
blackness with energy. The origin of high-t region violations of scaling laws
is discussed.
