anchor: It was pitch dark, but Lawrence was following with the candle, and by its feeble light we saw that the bed had not been slept in, and that there was no sign of the room having been occupied. 
positive: Lawrence and I determined that the bed had not been slept in by entering the unoccupied room by candlelight.
negative: Lawrence and I noticed that the room was a mess, and the sheets were torn off of the bed.