  Multi-wavelength B, V, R, I observations of the optical afterglow of GRB
050319 were performed by the 1.05-m telescope at Kiso Observatory and the 1.0-m
telescope at Lulin Observatory from 1.31 hours to 9.92 hours after the burst.
Our R band lightcurves, combined with other published data, can be described by
the smooth broken power-law function, with $\alpha_1$ = -0.84 $\pm$0.02 to
$\alpha_2$ = -0.48$\pm$0.03, 0.04 days after the GRB. The optical lightcurves
are characterized by shallow decays-- as was also observed in the X-rays--
which may have a similar origin, related to energy injection. However, our
observations indicate that there is still a puzzle concerning the chromatic
breaks in the R band lightcurve (at 0.04 days) and the X-ray lightcurve (at
0.004 days) that remains to be solved.
