I think your readers, and the authors too, would be interested in a further reference to work on the first of these two subjects. This concerns an investigation made by one of my former colleagues, Dr. T. A. Banfield, and myself on “The Effect of Various Factors on the Rate of Dissolution of Mild Steel in Sulphuric Acid Solutions.” (Fifth Report of the Corrosion Committee, The Iron and Steel Institute, Special Report No. 21, London, 1938, pp 279-292.)
It was our practice to derust the large numbers of heavy specimens exposed in our field tests by immersion in inhibited sulfuric acid. We naturally took steps to determine the blank losses suffered by the specimens, and soon observed that these blanks varied with the material; e.g., they were greater for wrought irons than for steels. This led us to conduct an exact physico-chemical investigation of pickling in dilute sulfuric acid, in...
