Some of the pirates became very famous. The very sight of the Jolly Roger, as the pirates' black flag was called, struck terror to the hearts of merchantmen, and it is said that one pirate captured and sunk as many as four hundred ships before he was caught. Yet these ruffians often had dealings with seemingly respectable tradesmen. Having captured a few ships, and taken all the booty on board his own, the pirate would sail for some port. There he would show some old letters of marque, swear that he was a privateer, and had captured the goods lawfully from the enemy, for the world was always at war in those days. And as the goods were going cheap, too many questions would not be asked. Thus a profitable trade was done. The Navigation Laws too helped pirates to thrive on the coasts of America. For they seemed so unjust and burdensome that people thought it no wrong to evade them. So, often, piracy and smuggling went hand in hand. At length piracy grew so bad that people felt that something must be done to stop it. And when an Irishman named Lord Bellomont came out as Governor in 1696 he set about doing it. It was decided that the best way to do it was to send a swift and well-armed frigate under a captain who knew their haunts and ways, to catch these sea-robbers. For this, Captain Kidd, a tried sailor, was chosen, and he set sail with a somewhat ruffianly crew in the ship Adventure. But Captain Kidd was unlucky. Though he roamed the seas and sought the pirates in the haunts he knew so well he found never a one. Nor could he find even enemy ships which, as a privateer, he might have attacked. Dutch ships, ships of the Great Mogul he met. But Britain was at peace with Holland and on most friendly terms with the heathen potentate. Pirates and ships of France he could not find. Food and money were nearly gone, the crew grew mutinous. They had come forth for adventure, and not to sail the seas thus tamely and on short rations to boot. So there was angry talk between the crew and captain. Plainly they told him that the next ship which came in sight, be it friend or foe, should be their prey. Kidd grew furious, and, seizing a hatchet, he hit one of the men on the head so that he fell senseless on the deck and died. Alone he stood against his mutinous crew. But in the end he gave way to them. He turned pirate, and any ship which came his way was treated as a lawful prize. For two years after Captain Kidd left New York nothing was heard of him. Then strange and disquieting rumours came home. It was said that he who had been sent to hunt pirates had turned pirate himself; that he who had been sent as a protection had become a terror to honest traders. So orders were accordingly sent to Lord Bellomont to arrest Captain Kidd. A royal proclamation was also issued offering free pardon to all pirates save two, one of whom was William Kidd.