midnight
`` Ay bane work any time skol be , '' spoke the Norwegian , and a puzzled expression flitted over his face as both Cassells broke into what was to him an inexplicable fit of laughter at his words . In the meantime the boys had telephoned to the hotel that work on the aëroplanes would detain them till late . They did not wish to inform the girls that they were undertaking a night watch , as that would have led to all sorts of questions , and if their fears proved ungrounded they felt pretty sure of coming in for a lot of `` joshing . '' They agreed to divide the night into two parts , Jimsy watching till midnight and then awakening Roy who would take up the vigil till dawn . This arrangement having been made they secured a light lantern from an adjacent hardware store and , entering the deserted livery stable , prepared to carry out their plans . With the canvas covers of the aëroplanes Roy managed to fix up quite a comfortable bed on a pile of hay left in a sort of loft over the abandoned stable . As for Jimsy , he made himself as comfortable as possible in the chassis of the _ Golden Butterfly _ , the seats of which were padded as luxuriously as those of a touring car .