Four o'clock
He had , before starting on this dangerous air flight that had ended so far from home , and under such singular conditions placed a little pistol in his pocket , though hardly under the belief that he would have any occasion to make use of it . But he was now determined not to let this man get the upper hand . He could see that various desperate plans must be forming in that scheming brain of the one-time aviator , and now yeggman ; and Frank was constantly on the watch so that he might not be caught napping . `` Four o'clock ! '' repeated Andy ; `` that would mean at least two more hours before the sun set , would n't it ; and even after that it might stay light enough another hour for them to see us if they steamed along ? '' `` You mean the people aboard that tug , do n't you ? '' asked Casper Blue , sneeringly .