  We calculate the tension $\sigma$ of the interface between the confined and
deconfined phases by the histogram method in SU(3) lattice gauge theory for
temporal extents of 4 and 6 using the recent high-statistics data by QCDPAX
collaboration. The results are $\sigma/T_c^3 = 0.0292(22)$ and 0.0218(33) for
$N_t=4$ and 6, respectively. The ratio $\sigma/T_c^3$ shows a scaling violation
similar to that already observed for the latent heat $\latent$. However, we
find that the physically interesting dimensionless combinations
$(\sigma^{3}/\latent^2 T)^{1/2}$ and $\sigma T/ \latent$ scale within the
statistical errors.
