This prize is awarded annually by the Institute to the author(s) of a paper of particular scientific or technological merit published in each volume of Corrosion Science, to commemorate the outstanding contribution of the late T.P. Hoar to pure and applied science and his long association with the organization which is now called the Institute of Corrosion. The prize is sponsored jointly by the Institute and Elsevier and consists of a cash sum and a commemorative certificate. The 1994 prize has been awarded to Prof. M. Stratmann and Dr J. Muller of the MaxPlanck-Institut fur Eisenforschung GMBH of Dusseldorf for their paper ‘The Mechanism of Oxygen Reduction on Rust-Covered Metal Substrates’ [Corros. Sci. 36, 327 (1994)]. Readers may notice that this is the second year in succession that the Award has been won by Prof. Stratmann. He has recently moved from the Max-Planck Institute in Dusseldorf to the University of Erlangen.