Note every change of direction, with the time; and whenever you hear or feel anything from outside, note it, with the time and direction; and don't forget to note any variations in the horse's pace.
You follow the process ?" "Perfectly.

But do you think the method is accurate enough to fix the position of a house?
Remember, this is only a pocket-compass with no dial, and it will jump frightfully.

And the mode of estimating distance is very rough." "That is all perfectly true," Thorndyke answered.

"But you are overlooking certain important facts The track-chart that you will produce can be checked by other data.

The house, for instance, has a covered way by which you could identify it if you knew approximately where to look for it.