  The author's lecture notes concerning the correlation functions and the
thermodynamics of a simple polar fluid are summarized. The emphasis is on the
dipolar hard sphere fluid and the mean spherical approximation and on the
relation of these results to the Clausius-Mossotti and Onsager formulae for the
dielectric constant. Previous excerpts from these lecture notes, Condens.
Matter Phys., 2009, 12, 127; ibid., 2010, 13, 13002, have contained results
that were not widely known. It is hoped that this third, and likely final,
excerpt will prove equally helpful by gathering several results together and
making these more widely available and recording a few new results.
