five o'clock
`` Lord , I think it 's great ! '' Roger drew a deep breath . `` Let 's unload , old man . '' They worked without stopping except for lunch , until five o'clock . With ax and shovel they cleared away cactus and drifts of sand for a level space on which to set up their living tent . Austin had given them plans for this . They laid a rough floor and raised around this a four foot wainscoating .