  The liquid-vapour phase transition near a weakly attractive surface is
studied by simulations of the coexistence curves of water in hydrophobic pores.
There is a pronounced gradual density depletion of the liquid phase near the
surface without any trend to the formation of a vapour layer below the bulk
critical temperature Tc. The temperature dependence of the order parameter in
the surface layer follows the power law (rol - rov) ~ (1 - T/Tc)^beta1 with a
value of the exponent beta1 close to the critical exponent beta1 = 0.82 of the
ordinary transition in the Ising model. The order parameter profiles in the
subcritical region are consistent with the behaviour of an ordinary transition
and their temperature evolution is governed by the bulk correlation length.
Density profiles of water at supercritical temperatures are consistent with the
behaviour of the normal transition caused by the preferential adsorption of
voids. The relation between normal and ordinary transitions in the Ising model
and in fluids is discussed.
