ten o'clock
The strangest part of it was that something or somebody was bringing in little sticks of wood and cactus burrs and piling them up among the doll clothes . At the end of the week , Jack decided to solve the mystery . He said he was going to sit up all night and see what kind of a thing was coming into the tent so regularly . He did n't do exactly what he intended to do , for by ten o'clock his eyelids grew too heavy and he was fast asleep in the vacant bunk which he had chosen for a hiding place . Patter , patter , patter , something was coming . Jack awoke with a start of expectation . There was no moon tonight , but he had left a candle burning in a distant corner .