 His portrait bust of the painter and Director of the Academy, Jean-Auguste-Dominique Ingres, executed shortly after his return to Paris in 1840, in plaster, tinted terracotta, is conserved by the École nationale supérieure des Beaux-Arts, Paris.Ottin exhibited in 1841 a bust in marble, and afterward produced a group of "Hercules Presenting to Eurysthea the Apples of Hesperides," in marble; busts of Chaptal, Quesnault, Ingres, (1842); and Ecce Homo, in marble, (1844).His 1846 "Indian Hunter Surprised by a Boa" in bronze resulted in the awarding of a medal and was a featured piece under the center dome of the New York Crystal Palace in 1853, and was later mounted at Fountainebleau Chateau outside Paris.