Left: The distribution of B/T in the eight low‐﹩L_{\mathrm{X}\,}﹩ clusters and the mean distribution of the MDS field sample. For the eight clusters, the dotted histograms show the distribution of all galaxies, and the solid histograms are corrected for foreground and background contamination by subtracting the field distribution. Right: The B/T distributions of the high‐﹩L_{\mathrm{X}\,}﹩ clusters.