  We consider two systems of wave equations whose wave-packet solutions have
trajectories that are altered by the "anomalous velocity" effect of a Berry
curvature. The first is the matrix Weyl equation describing cyclotron motion of
a charged massless fermion. The second is Maxwell equations for the
whispering-gallery modes of light in a cylindrical waveguide. In the case of
the massless fermion, the anomalous velocity is obscured by the contribution
from the magnetic moment. In the whispering gallery modes the anomalous
velocity causes the circumferential light ray to creep up the cylinder at the
rate of one wavelength per orbit, and can be identified as a continuous version
of the Imbert-Federov effect.
