Thus, floating down our black highway, sullenly frowned upon by the knitted brows of Blackfriars, Southwark, and London, each in his lowering turn, I was shown by my friend Pea that there are, in the Thames Police Force, whose district extends from Battersea to Barking Creek, ninety-eight men, eight duty boats, and two supervision boats; and that these go about so silently, and lie in wait in such dark places, and so seem to be nowhere, and so may be anywhere, that they have gradually become a police of prevention, keeping the river almost clear of any great crimes, even while the increased vigilance on shore has made it much harder than of yore to live by 'thieving' in the streets. And as to the various kinds of water-thieves, said my friend Pea, there were the Tier-rangers, who silently dropped alongside the tiers of shipping in the Pool, by night, and who, going to the companion-head, listened for two snores - snore number one, the skipper's; snore number two, the mate's - mates and skippers always snoring great guns, and being dead sure to be hard at it if they had turned in and were asleep.
Hearing the double fire, down went the Rangers into the skippers' cabins; groped for the skippers' inexpressibles, which it was the custom of those gentlemen to shake off, watch, money, braces, boots, and all together, on the floor; and therewith made off as silently as might be. Then there were the Lumpers, or labourers employed to unload vessels. They wore loose canvas jackets with a broad hem in the bottom, turned inside, so as to form a large circular pocket in which they could conceal, like clowns in pantomimes, packages of surprising sizes. A great deal of property was stolen in this manner (Pea confided to me) from steamers; first, because steamers carry a larger number of small packages than other ships; next, because of the extreme rapidity with which they are obliged to be unladen for their return voyages. The Lumpers dispose of their booty easily to marine store dealers, and the only remedy to be suggested is that marine store shops should be licensed, and thus brought under the eye of the police as rigidly as public-houses. Lumpers also smuggle goods ashore for the crews of vessels. The smuggling of tobacco is so considerable, that it is well worth the while of the sellers of smuggled tobacco to use hydraulic presses, to squeeze a single pound into a package small enough to be contained in an ordinary pocket. Next, said my friend Pea, there were the Truckers - less thieves than smugglers, whose business it was to land more considerable parcels of goods than the Lumpers could manage. They sometimes sold articles of grocery and so forth, to the crews, in order to cloak their real calling, and get aboard without suspicion. Many of them had boats of their own, and made money. Besides these, there were the Dredgermen, who, under pretence of dredging up coals and such like from the bottom of the river, hung about barges and other undecked craft, and when they saw an opportunity, threw any property they could lay their hands on overboard: in order slyly to dredge it up when the vessel was gone. Sometimes, they dexterously used their dredges to whip away anything that might lie within reach. Some of them were mighty neat at this, and the accomplishment was called dry dredging. Then, there was a vast deal of property, such as copper nails, sheathing, hardwood, &c., habitually brought away by shipwrights and other workmen from their employers' yards, and disposed of to marine store dealers, many of whom escaped detection through hard swearing, and their extraordinary artful ways of accounting for the possession of stolen property. Likewise, there were special-pleading practitioners, for whom barges 'drifted away of their own selves' - they having no hand in it, except first cutting them loose, and afterwards plundering them - innocents, meaning no harm, who had the misfortune to observe those foundlings wandering about the Thames.
We were now going in and out, with little noise and great nicety, among the tiers of shipping, whose many hulls, lying close together, rose out of the water like black streets. Here and there, a Scotch, an Irish, or a foreign steamer, getting up her steam as the tide made, looked, with her great chimney and high sides, like a quiet factory among the common buildings. Now, the streets opened into clearer spaces, now contracted into alleys; but the tiers were so like houses, in the dark, that I could almost have believed myself in the narrower bye-ways of Venice.
Everything was wonderfully still; for, it wanted full three hours of flood, and nothing seemed awake but a dog here and there.
So we took no Tier-rangers captive, nor any Lumpers, nor Truckers, nor Dredgermen, nor other evil-disposed person or persons; but went ashore at Wapping, where the old Thames Police office is now a station-house, and where the old Court, with its cabin windows looking on the river, is a quaint charge room: with nothing worse in it usually than a stuffed cat in a glass case, and a portrait, pleasant to behold, of a rare old Thames Police officer, Mr. Superintendent Evans, now succeeded by his son. We looked over the charge books, admirably kept, and found the prevention so good that there were not five hundred entries (including drunken and disorderly) in a whole year. Then, we looked into the store-room; where there was an oakum smell, and a nautical seasoning of dreadnought clothing, rope yarn, boat-hooks, sculls and oars, spare stretchers, rudders, pistols, cutlasses, and the like. Then, into the cell, aired high up in the wooden wall through an opening like a kitchen plate-rack: wherein there was a drunken man, not at all warm, and very wishful to know if it were morning yet. Then, into a better sort of watch and ward room, where there was a squadron of stone bottles drawn up, ready to be filled with hot water and applied to any unfortunate creature who might be brought in apparently drowned. Finally, we shook hands with our worthy friend Pea, and ran all the way to Tower Hill, under strong Police suspicion occasionally, before we got warm.