From A Bibliography of Alexandre Dumas père by Frank Wild Reed: Barrault's letter provoked this reply from Dumas, which, in its turn, was answered by one signed: "Louvet."
Apparently Barrault attacked Lamartine, and Dumas, in taking up the cudgels for his friend, assailed the Saint-Simonians, to which cult Barrault belonged, or else was very sympathetically inclined.
Original edition : Paris, 1848.