AN AIR SHIPUnder Course of Construction in Losransport.Its Size and Shape Known Only to theBuilders.Edward Ball and Henry Conrad, Well-Known Yount? Men of This City.Who knows hut what the mysteries of aerial navigation may yet be solved by Logapsport inventors? Or, who knows but what the solution has already been made and the alleged skylarking about by night in the empyrean near this city was really on the square.A representative of the Pharos diddiscover today that an air ship is really in course of construction by Messrs Edward Gall and Ilenrv Conrad, well-known young men of the city, residing in the Eastend. Parts of the ship were and are being made at J. A. Aman’s carriage works on the Southside, but its size (further than it will be thirty feet long) and shape are held a profound secret in the oreast of the builders.Mr. Galils a brother of Wm. Gall, a compositor on the Pharos, who has had considerable experience in handling a balloon-.% Edward makes his home with William, but notwithstanding that fact the latter has not been let into the secret of the airship business, He says that he had frequently seen Edward in possession of odd shaped pteces of iron, but never questioned him concerning them.The gentleman who put the Pharos man next today, is firm in the belief that Messrs. Gall and Conrad are constructing this machine as an improvement upon one that has been in use for some time, and to it may be traced those mysterious lights which have moved strangely in the sky of late.