Jean-François Pilâtre de Rozier the autumn of 1784, but the attempt was not launched until after another Frenchman, Jean-Pierre Blanchard, and American companion, Dr John Jeffries, flew across the English Channel in a hydrogen gas balloon on 7 January 1785, from England to France. Despite several attempts, De Rozier and his companion, Pierre Romain, were not able to set off from Boulogne-sur-Mer until 15 June 1785. After making some progress, a change of wind direction pushed them back to land some 5 km from their starting point. The balloon suddenly deflated (without the envelope catching fire) and crashed near Wimereux in the Pas-de-Calais, from
John Sheldon (anatomist) October. It carried scientific instruments, but failed to ascend: Blanchard threw instruments overboard. They landed at Sunbury-on-Thames, and quarrelled, with Blanchard carrying on the flight alone. With John Jeffries, Sheldon then tried to have the Royal Society support more balloon ascents, but without success. Sheldon spent time in studying the lymphatic system, an area on which William Cumberland Cruikshank also was working. He devoted attention to embalming, too. Both interests came from William Hunter's inspiration, and were lifelong. Sheldon had a celebrated body of a young woman embalmed: there are differing accounts. It was that of a patient who had