nine o'clock
There the wagon could be concealed , and from that point they would also have a view of the future movements of their enemies . When the sun arose the savages could be seen standing guard over the sham wagon , at their old camp ground , and the boys enjoyed this bit of humor in the extreme . `` I feel so jolly at the trick that I want to go down to the river and laugh at them , '' exclaimed George . Up to nine o'clock there was no indication that the ruse had been discovered . The Professor was in his happiest mood at the good imitation , and John had an unmistakable smile , and , as the boys ' laughter grew more boisterous , he broke into a laugh that actually startled them . It was no less amusing to the captive . Beyond question it pleased him , but whether on account of his own safety or because of the ludicrous attitude of the besiegers , was beyond their comprehension .