  The polarization of Lambda0, AntiLambda0, Sigma+ and Xi- inclusively produced
in Sigma- induced interactions at 330 GeV has been measured in the experiment
WA89 at CERN. This is the first measurement of polarization of baryons produced
by a hyperon beam. No polarization of AntiLambda is observed, as was also the
case in proton beam data. At transverse momenta of about 1 GeV/c Lambda0 and
Sigma+ show little polarization, significantly lower than in the proton beam
data, while Xi- have a polarization comparable to the polarization of Lambda0
produced in proton beams.
