Description:21 39 44 00 Aviation, transport, communications. The 20s. England, Dover. A French seaplane with an average of 75 miles by the hour to cross English Channel from Boulogne to Dover. Record, crossed in 25 minutes. Seen on seaplane in port of Dover with French flag and pilot above. Seen on a dirigible balloon which seems to be blocked by mast. Crowd looks at the balloon hung on on the mast, rather unusual.