FIG. 1: Results for λ = 1 . 1. (a) shows the phase behaviour in the ( x, c ) representation, (b) in the ( c$_{1}$, c$_{2}$ ) representation and (c) in the ( x, p $^{∗}$) representation. The results for Onsager theory and FMT are plotted on the same graph. In (a)-(c) the upper pairs of solid lines are the binodals according to Onsager theory, the lower pairs of solid lines are the binodals according to FMT and the dashed lines indicate the I - N spinodals. An isotropic phase ( I ), isotropic and nematic coexistence ( I + N ) and a nematic phase ( N ) are present. In (c) the inset is for Onsager theory. In (a) and (b) the thiner solid lines are selected tie lines connecting coexisting state points. Note that the two theories are plotted on the same graph for comparative purposes; if one is interested in the FMT results for example, then the phase behaviour above the nematic binodal is nematic only and one should ignore the results from Onsager theory. In (d) we plot the nematic order parameters along the nematic binodal for Onsager theory and FMT. The dotted curve is S$_{1}$ , the dashed curve is S$_{2}$ and the solid line is S$_{tot}$ . 31