In electrochemical studies of metal chlorides dissolved in normalLiCl‐normalKCl eutectic melt it is often desired to convert the metal‐metal ion oxidation potentials Ea relative to a normalAg/normalAgCl in normalLiCl‐normalKCl eutectic reference electrode to those Eb based on the chlorine reference electrode. Such conversion can be made by using the emf Ec of the normalAg/normalAgCl in normalLiCl‐normalKCl eutectic/Cl2 cell, and involves a correction term ΔE. By using cases where both Ea and Eb can be determined independently, studies have been made of the variation of ΔE with the nature and concentration of the metal ions in the melt, the temperature of the melt, the concentration of normalAgCl in the reference electrode, and the nature of the membrane separating the reference and metal electrodes. This information gives an estimate of the reliability of data obtained when the two reference electrodes are interchanged.

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The lower part of the limestone succession of the Hagab Monocline in the Oman Peninsula, Arabia, is divided into the Bih Dolomite (Permian, 650 m.), Hagil Limestone (Permian, 260 m.), Ghail Limestone (Trias, 600 m.), and the Elphinstone Beds (Noric, 431 m.). The latter consists of five formations, two of which are very fossiliferous. The succession also occurs to the south in borings in the forelands of the Oman Mountains and is similar to that of the foreland of the Zagros Range of Iran.

The fauna, mainly small gastropods and lamellibranchs, of the sands and silts (the Hammar Formation) occurring near the surface in various borings in the Basrah area is shown to be marine and of Recent age. It is suggested that the Persian Gulf sea in Recent times extended a considerable distance north of its present shoreline: its silting-up is considered to be due to cessation of subsidence. The subsequent geography of the area, with its fluviatile, lacustrine, and estuarine sediments, is possibly due to localized subsidence and elevation.

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