Transverse Energy Production inPb208+ Pb Collisions at 158 GeV per Nucleon

Measurements of the forward and the transverse energy in 158 GeV per nucleon ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ + Pb collisions are presented. A total transverse energy of about 1 TeV is created in central collisions. An energy density of about 3 GeV/${\mathrm{fm}}^3$ is estimated for near head-on collisions. Only statistical fluctuations are seen in the ratio of electromagnetic to hadronic transverse energy.