The man who had just whispered to Cotherstone nodded.
"It's a pig-killer's cord, sir," he answered. "It's what a pig-killer fastens the pig down with—on the cratch."
"A cratch?—what's that?" asked Brereton, who had gone close to the table to examine the cord, and had seen that, though slender, it was exceedingly strong, and of closely wrought fibre. "Is it a sort of hurdle?"
"That's it, sir," assented the policeman. "It is a sort of hurdle—on four legs. They lay the pig on it, don't you see, and tie it down with a cord of this sort—this cord's been used for that—it's greasy with long use."
"And it has been cut off a longer piece, of course," said the doctor. "These cords are of considerable length, aren't they?"
"Good length, sir—there's a regular coil, like," said the man. He, too, bent down and looked at the length before him. "This has been cut off what you might call recent," he went on, pointing to one end. "And cut off with a sharp knife, too."
The police sergeant glanced at the doctor as if asking advice on the subject of putting his thoughts into words.
"Well?" said the doctor, with a nod of assent. "Of course, you've got something in your mind, sergeant?"
"Well, there is a man who kills pigs, and has such cords as that, lives close by, doctor," he answered. "You know who I mean—the man they call Gentleman Jack."
"You mean Harborough," said the doctor. "Well—you'd better ask him if he knows anything. Somebody might have stolen one of his cords. But there are other pig-killers in the town, of course."