ten o’clock at night
`` Never ! '' said Dick and Joe together , almost in a shout . `` Onward , then , and may we have the help of Heaven ! '' At ten o'clock at night , after passing over ravines , forests , and scattered villages , the aeronauts reached the side of the Trembling Mountain , along whose gentle slopes they went quietly gliding . In that memorable day , the 23d of April , they had , in fifteen hours , impelled by a rapid breeze , traversed a distance of more than three hundred and fifteen miles . But this latter part of the journey had left them in dull spirits , and complete silence reigned in the car . Was Dr. Ferguson absorbed in the thought of his discoveries ?