six o'clock
`` There is no use of our killing ourselves with rowing when we are only out for fun . '' The others agreed , and as a consequence they took a nap after the meal and did not get started again until three o'clock . They soon found the stream they were on broad but shallow , and felt sure it would lead to the lake . They kept on steadily until six o'clock , and then came to a halt at a point where the watercourse narrowed and ran between a series of jagged rocks . `` We ought to be getting to the lake pretty soon , '' was Snap 's comment . `` Jed Sanborn told me we could make the trip from Firefly Lake in a day if we did n't fool along the way . '' `` Well , do n't forget that we stopped for a nap , '' answered Whopper .