  We report the magnetic trapping of metastable $^3P_2$ atomic strontium. Atoms
are cooled in a magneto-optical trap (MOT) operating on the dipole allowed
$^1S_0-^1P_1$ transition at 461 nm. Decay via $^1P_1\to {^1D_2}\to {^3P_2}$
continuously loads a magnetic trap formed by the quadrupole magnetic field of
the MOT. Over $10^8$ atoms at a density of $8 \times 10^9$ cm$^{-3}$ and
temperature of 1 mK are trapped. The atom temperature is significantly lower
than what would be expected from the kinetic and potential energy of atoms as
they are transferred from the MOT. This suggests that thermalization and
evaporative cooling are occurring in the magnetic trap.
