1872.] Artificial Flight: An Aérial Ship. 401 
We come now to the description of the journey actually 
undertaken in this machine, premising that instances of so 
complete a fulfilment of calculation are very rarely oc- 
current. 
The ascent took place from the Fort Neuf of Vincennes. 
The crew consisted of 14 men, with baggage and provisions 
weighing 1°13 tons. There were on board MM. Dupuy de 
ia — 
pf 
Léme, Zédé (Ingénieur de la Marine), Yon, and Dartois, 
aéronauts. The instruments weighed 1°75 tons, and there 
were 0°27 ton of packages to be carried to the destination of 
