On the determination of an optimum microwave [Correction]

For the above-named work (ibid., vol. BME-13, pp. 76-87, April 1966) the magnitude of the current 2I should be replaced with I for the extreme left image in Fig. 2. In addition the multiplying factor 2 should be removed from the secoind term in the electric field equationis (6) and (7). The contribution to the total field by these terms is sufficiently small that the computer results remain valid.