  Using electroweak data and an effective Lagrangian approach we obtain
stringent bounds on the tau anomalous magnetic moment, $-0.004 \leq a_\tau \leq
0.006$, and on its electric dipole moment, $|d_\tau| \leq 1.1 \times 10^{-17}
e$ cm. This significantly improves our previous bounds. With the same method,
we obtain limits on the dipole moments of other fermions.
