Corrected Dispersion Values for CP 0808, CP 0328 and HP 1506

Abstract

THE dispersion values for the pulsating radio sources listed in ref. 1 are unfortunately in error. An error in the measurement of the cable lengths which determine the dispersion has meant that the values given in Table 1 of frequency sweep, integrated electron density and distance should read The amended values of distance do not alter the conclusion that the sources are within the galactic distribution of ionized hydrogen.