He 's good , too , on their personalities and private lives , whether he 's recounting Meissonier 's pleas , during the siege of Paris , that his horse not be slaughtered for food -LRB- his mare , he explained to the commanding general , was '' an old friend who carried me all day at Solferino , '' and was '' indispensable for the completion of my unfinished pictures '' -RRB- or the jealousy Berthe Morisot felt for Eva Gonzales , another pioneering Impressionist who had more pictures painted of her .