Crystals of the material with the nominal composition Bi2Sr2CuO6 exist as an oxygen deficient solid solution in which strontium atoms are replaced by bismuth. Results are presented from a series of measurements of the Hall coefficient as a function of temperature on crystals from across the range of stoichiometry. In superconducting crystals the Hall coefficient has a maximum at 70K which is shown to be a property of the normal state.</p
