Coming round the elbow before Wapping put them in view of a mile of river, running straight up to the great horseshoe-bend between Limehouse and Rotherhithe, Daniel was surprised, and yet not, to see that the new city on the left bank extended almost that entire distance, so that the formerly free-standing towns of Shadwell and Limehouse were all but swallowed by London now. The very idea made his skin crawl just a bit, for the downriver slum-towns had always been the breeding-grounds of mudlarks, river-pirates, rabid dogs, wharf-rats, highwaymen, and Vagabonds, and the intervening belt of countryside—pocked though it might have been with clay-pits, brick-yards, and gin-houses—had been a sort of cordon sanitaire between them and London. He wondered if London might get more than it bargained for, by replacing that barrier with through streets.