you see their importance. They furnish the time factor in respect of the other footprints. Look at this one and then look at that." He pointed from one to another of the faint impressions of the dead man's foot.
"You mean that there are signs of a struggle?" said Fox.
"I mean more than that," replied Thorndyke. "Here is one of Pratt's footprints treading into the print of a small, pointed foot; and there at the edge of the gravel is another of Pratt's nearly obliterated by the tread of a pointed foot. Obviously the first pointed footprint was made before Pratt's, and the second one after his; and the necessary inference is that the owner of the pointed foot was here at the same time as Pratt."
"Then he must have been the murderer!" exclaimed Fox.
"Presumably," answered Thorndyke; "but let us see whither he went. You notice, in the first place, that the man stood close to this tree"—he indicated the hornbeam—"and that he went towards the elm. Let us follow him. He passes the elm, you see, and you will observe that these tracks form a regular series leading from the hornbeam and not mixed up with the marks of the struggle. They were, therefore, probably made after the murder had been perpetrated. You will
