eight o'clock
He made three copies of it . Selecting three of his best men , he gave each a copy , and told them to make their way together , well armed , to the armory of the airships . It was a perilous journey , but if either of them reached his destination , he was to deliver his copy of the letter to the general . In it Max asked General Quincy to send him one of the `` Demons , '' as promised , that night at eight o'clock ; and he also requested , as a signal that the messengers had reached him and that the air-ship would come , that he would send up a single Demon , high in the air , at once on receiving the letter . We went to the roof with our field-glasses . In two hours , we thought , the messengers , walking rapidly , would reach the armory . Two hours passed .