  We compute the spectrum of SU(2) gauge theory with two, four or six Dirac
fermions in the fundamental representation of the gauge group. We investigate
the scaling of the meson masses as a function of the quark mass when
approaching the chiral limit. We find behavior compatible with the usual
pattern of chiral symmetry breaking at $N_f\le 4$ and with the existence of an
infrared fixed point at $N_f=6$. In the six flavor case we determine the
anomalous dimension of the quark mass operator from the spectrum and find
results fully consistent with earlier analyses.
