  We present the results of a high statistics lattice study of the gluon
propagator, in the Landau gauge, at $\beta=6.0$. As suggested by previous
studies, we find that, in momentum space, the propagator is well described by
the expression $G(k^2)= \Big[ M^2 + Z\cdot k^2(k^2/\Lambda^2)^\eta\Big]^{-1} $.
By comparing $G(k^2)$ on different volumes, we obtain a precise determination
of the exponent $\eta=0.532(12)$, and verify that $M^2$ does not vanish in the
infinite volume limit. The behaviour of $\eta$ and $M^2$ in the continuum limit
is not known, and can only be studied by increasing the value of $\beta$.
