Abstract
An equation is derived connecting the Hall coefficient, resistivity, thermo- power and Nernst-Ettinghausen coefficient. The only quantity that cannot be measured experimentally in the equation is the rate of change of the Hall coefficient with Fermi energy which may thus be calculated if all the other quantities are available. Existing data are examined and in the case of the noble metals Cu, Ag and Au, the calculated values appear to be consistent with the Fermi surfaces.