As on all passenger-carrying craft plying the great estuary having Hong Kong and Macao for its base and Canton its apex, you find the native passengers on your boat confined below the deck whereon the state-rooms and dining saloon of European travelers are located, and you perceive racks of Mausers and cutlasses at convenient points of this upper deck. To American eyes it is novel to see every stairway closed by a grated iron door, and a man armed with a carbine on your side of each of these barriers. You perceive on the main deck three or four hundred Chinamen of the coolie class, some playing card games, others Smoking metal pipes with diminutive bowls, but most of them slumbering in a variety of grotesque attitudes. None of these Mongols who observe your curiosity seems to hold any feeling of resentment for the effective separation of the races, which places him, the native of the land, in a position that might be called equivocal. The English skipper and his Scotch engineer, who take the seats of honor when tiffin is served, respond willingly to your appeal for an explanation of the doors of bar-iron and the display of weapons--every first-class passenger always asks the question, and on every trip the British seafarers tell the story of Chinese piracy as practised up to comparatively recent times in the great estuary having a dozen or more names. And an interesting tale it is, for it recounts deeds of the sea quite as audacious and high-handed as anything performed on land by Jesse James and his stage-coach bandits. Up to fifteen or eighteen years ago the estuary bristled with Chinese pirates, and wherever native fishermen and sailors foregathered, at Hong Kong, Canton or Macao, schemes for holding-up and sacking steamers carrying bullion and valuable merchandise were hatched with a frequency that gave a phase to local commerce that was anything but comforting, and more than one brave Yankee or British sailor went to his death fighting yellow thugs against overwhelming odds. The public decapitation of a handful of these murderers appeared to place no check on the outlawry. [Illustration: PRINCIPAL SECTION OF MACAO]