"'Fasti ad quos lectores saepe ... relegantur, sunt fasti consulares quos volumen quartum exhibebit. In eodem volumine etiam 'Additamenta' totius operis edentur" -- Praefatio editores, v.1, p. viii-ix. There is no prospect of the publication of that volume. cf. Letter of the publisher, 28-VIII-'30.