 He therefore founded "La Réforme", in which to advance his propaganda.Between Ledru-Rollin and Odilon Barrot with the other chiefs of the "dynastic Left" there were acute differences, hardly dissimulated even during the temporary alliance which produced the campaign of the banquets.It was the speeches of Ledru-Rollin and Louis Blanc at working-men's banquets in Lille, Dijon and Chalons that heralded the revolution of 1848.