  We show that magnetoresistance of Bernal-stacked graphite (with the magnetic
field ${\bf B}$ parallel to the c-axis and the current in the ab plane) scales
linearly with the magnetic field over an interval of classically weak fields.
The linearity is related to the presence of extremely light, Dirac-like
carriers near the $H$ ($H^{\prime}$)- points of the Brillouin zone. The Hall
resistivity in this interval also shows a non-analytic, $B\ln |B|$ behavior,
and is dominated by holes.
