  Strongly correlated two dimensional electrons are believed to form a spin
liquid in some regimes of density and temperature. As the density is varied,
one expects a transition from this spin liquid state to a spin density wave
antiferromagnetic state. In this paper we show that it is self-consistent to
assume that this transition is second order and, on this assumption, determine
the critical behavior of the $2p_F$ susceptibility, the NMR rates $T_1$ and
$T_2$ and the uniform susceptibility. We compare our results to data on high
$T_c$ materials.
