We learn that nearly all the work of Mr. Porter's Aeroport is finished, and that in one month it could be made ready for its voyage in open air' A little more money, however is needed to complete the arrangement?, and a liberal interest is promised on the investment, the proprietor having no doubt whatevei about the success of his aerial navigator. But the people at large have not the same degree of faith that Mr. Porter has, and therefore are reluctant to take part in the enterprise.