 He presented his observations at the Royal Society of London in 1855.In 1858, Eugène Bouchut (1818–1891), a pediatrician from Paris, developed a new technique for non-surgical orotracheal intubation to bypass laryngeal obstruction resulting from a diphtheria-related pseudomembrane.His method involved introducing a small straight metal tube into the larynx, securing it by means of a silk thread and leaving it there for a few days until the pseudomembrane and airway obstruction had resolved sufficiently.