_Signs observed._--Passing a tree stump, I noticed a stone lying on it about the size of a cocoa-nut. I wondered for the moment how it came to be there, and soon discovered the reason. On the stump, and also sticking to the stone, were some bits of bruised walnut-rind, green, but dried up. Bits of shell of about four walnuts were lying about the ground near a leaning rock about 30 yards away south of the stump. The only walnut-tree in sight was about 150 yards north of the stump. At the foot of the stump, just where a man would stand to use the stone on it, was a cake of hardened mud that had evidently fallen from the sole of a grass sandal. DEDUCTION. _That a man was carrying a load._--Had it been anyone not carrying a load he or she would not have sat down on the stump or close to it; instead of that, he had gone 30 yards away to where a slanting rock was; this would support his load while he leant back against it to rest and eat his walnuts (whose shells were lying there). Women do not carry loads on their backs. _He was on a long journey._--As he wore sandals instead of bare feet. _Towards the south._--He had got the walnuts 150 yards north of the stump, had stopped there to break them with the stone, and had gone 30 yards further on his road to the rock to eat them. _He had passed there two days ago._--The cake of mud off his sandal showed that when he was there the ground was wet, and the dried husk of the walnuts corroborated this deduction. _Total information._--A man had passed here two days ago, on a long journey, carrying a load southward.