Corection to the second approximation calculation of the geomagnetic field, solar wind interface

In reporting the second approximation calculation of the geomagnetic field solar wind interface (D. B. Beard, J. Geophys. Res., 67: 477-83(1962)) an error was in sign in equation 20 owing to a change in notation during the calculation. Effects of the correction on the calculation are detailed. (W.D.M.)