It might be supposed that the whistler intended to give the person who followed him so closely into custody, but this was not the case, for Mr Jarker imagined that no sooner was there a policeman in sight, than the quiet-looking man would begin to close up. But it might be somebody else who was wanted, so Mr Jarker crossed the road--so did the quiet man; Bill crossed again--so did the quiet man; and, though the weather was cold, the bird-catcher perspired, as he muttered-- "I wonder what it's for?" However, he appeared to take matters very coolly, and peeped here and there into the bird-fanciers' shops, and so made his way into Holborn, now and then directing a peep at his quiet friend, who was apparently not taking the slightest heed of his proceedings, but all the same thoroughly realising the difficulty of finding one of his brotherhood when wanted. Passengers were plentiful here, and the crowd thickened as Jarker went on, till a good opportunity seemed to present itself. "Now for it!" thought Bill, and after a glance over his shoulder, he dodged in and out and about for five minutes, making more than one feint of having turned out of the main street; then, being apparently very much taken with the contents of a draper's window, he stopped short, and glanced to the right to find the quiet-looking man in precisely the same place, and worse still, probably in obedience to a sign from the said quiet man, to the left there was a policeman closing up quickly. "Meant for me!" muttered Bill; and again, as he turned hotter, "I wonder what it's for?" while once more glancing to the right, there was the quiet man also closing in quickly. But not so quickly as Jarker made a leap backwards into the road, dodged right under a horse's legs, round an omnibus, past cabs, carts, and wagons, and in and out and about like an eel, invulnerable to the tread of horses' feet or the passage of wheels. Ordinary people would have been run over half-a-dozen times, but Bill Jarker was not, and on he tore, with the two constables in full chase.