about four o'clock
`` Arc you going to use your sleeping bag to-night ? '' asked Bob . `` Sure thing , '' replied Mr. Anderson . `` We 're going to have a fine night , but about four o'clock to-morrow morning you are liable to make the acquaintance of some of those moustiques or gnats that Pierre tells about . If you are in your sleeping bag you can then just pull over the flap and have another snooze . '' `` It certainly looks like fine weather , '' said Bill . `` I think that I 'll get up real early and visit that trout hole I found to-night .