The effects of magnetic field turbulence on the anisotropy of galactic
cosmic rays of the highest energies are investigated. It is found tha
t if the cosmic ray Bur at energies above 1 EeV is made up predominant
ly of galactic protons, neither the observed galactic magnetic field t
urbulence nor possible halo turbulence are sufficient for both the com
puted anisotropy and galactic flux gradient to agree with observation.
The implication is that the origin of these cosmic rays is not within
our galaxy.