The Dutch were well acquainted with the work of the Spanish explorers, and the idea of contesting with Spain for a share in the profits and advantages of transatlantic discovery grew out of the war with Spain. At this time international law gave to a sovereign any new land discovered in his name, and not already laid hold upon by any Christian prince. If Holland was to fight Spain in America it would be useful to have at least the shadow of a tenable international claim; and so Hudson ignored the earlier Spanish voyages in assuming to discover the river to which his name was given, and the land thereabouts which the Dutch, with beautiful political audacity, first claimed to own by right of discovery, and afterward claimed to own through Spain as "first discoverer and founder of that New World." The first proposition to make a Dutch expedition to America came from an Englishman, a sea captain named Beets. The States-General refused this offer, but jealousy of Spain's resources in the New World kept alive the ambitions of the Dutch and finally resulted in the formation of the West India Company. The theory of this company was both commercial and political. The scheme was first broached by an exiled Antwerp merchant, William Usselinx, in 1592. Before it came to completion a Greenland Company came into existence, and, while feigning to hunt up a northwest passage, its ships are said to have sailed into the North River, and to have landed on these shores in 1598. It was not until 1606 that Usselinx's ideas were formulated in a working plan. The company might then have been fully formed had not talk of a peace with Spain made it politically unwise to risk the adventure. When in 1609 Henry Hudson, the English sailor, who already had made several voyages across the Atlantic, offered his services to the West India Company, it was ostensibly to seek a passage to India. The Amsterdam chamber of the company fitted out Hudson in the "Half Moon," which sailed out of the Texel on April 4, 1609. Whatever may have been Hudson's intentions as to any search for a northwest passage, he abandoned such a search in favor of one for a more southerly passage, having, it is said, been told by Captain John Smith "that there was a sea leading into the Western Ocean by the north of Virginia." After landing at Newfoundland, at Penobscot Bay, and at Cape Cod, Hudson found Delaware Bay; but a week later, realizing that he was too far south, he steered the Half Moon into the "Great North River of New Netherland." It is the tradition that during the exploration of the great bay and river a boat's crew from the Half Moon made its first landing on Long Island, at the sandy shore of Coney Island; but there might seem to be a likelihood that a landing would be made further to the north.