Determined at last to support their claim to the Pacific coast of North America, the Spaniards began to realize the necessity of exploring it more fully and of founding settlements. It was their plan to take possession of the whole region between Mexico upon the south and the Russian trading posts along the shores of Alaska. As exploration by land was impossible because of mountain ranges and deserts, the Spanish adventurers were forced to rely upon the ocean, with all its uncertainties of storm and contrary winds.
Between 1774 and 1779 voyages were made as far north as Queen Charlotte's Island, in latitude 54°. A station was established and held for many years at Nootka Sound, upon the west coast of Vancouver Island. The first expedition passed the Strait of Juan de Fuca apparently without seeing it, although there was a rumor to the effect that a broad opening into the land had been discovered by a certain Juan de Fuca in 1592, while he was exploring in the employ of Spain. The latitude of this opening, as he gave it, nearly corresponds to that of the strait which now bears his name.
For many years the attempt to discover a passage around the northern part of America engaged the early navigators upon both the Atlantic and Pacific oceans. Their desire to find an easy route to India spurred them to constant effort. For a time it was believed that such an opening actually existed, and mariners went so far as to give it a name, calling it the Straits of Anian. The reputed discoveries of Juan de Fuca materially strengthened the general belief in a passage to the northward of America.
Vizcaino, in his voyage of 1603, reached latitude 43° north and thought that he had discovered a great river flowing into the Pacific Ocean. This opening, although south of the point supposed to have been reached by Juan de Fuca, was believed for a time to be the entrance to the long-sought Straits of Anian. During the latter part of the seventeenth century California was represented upon the Spanish maps as an island having Cape Blanco, which Vizcaino discovered and named, as its northern point, and separated from the mainland by an extension of the Gulf of California northward.
To return now to the Spanish explorations, in the latter part of the seventeenth century we find that Heceta, following the first expedition, succeeded in getting as far as Vancouver Island, where, having been parted from an accompanying ship by a storm, he turned southward, passing the Strait of Juan de Fuca and keeping close by the shore. In latitude 46° 17' he found an opening in the coast from which a strong current issued. He felt sure that he had discovered the mouth of some large river. Upon the later Spanish maps this was called Heceta's Inlet, or River of San Roque. A glance at the map will show how closely the latitude given corresponds to the mouth of the river which was discovered later by Captain Gray and named, after his ship, the Columbia.
A short time before Heceta's discovery, Captain Jonathan Carver of Connecticut set out on an exploring tour, partly for the purpose of determining the width of the continent and the nature of the Indian inhabitants. He mentions four great rivers rising within a few leagues of one another, "The river Bourbon (Red River of the North) which empties itself into Hudson's Bay, the waters of the St. Lawrence, the Mississippi, and the river Oregon, or River of the West, that falls into the Pacific Ocean at the Straits of Anian." Carver's descriptions are fanciful, and it is not likely that he ever saw the river which is now known as the Columbia, although there is a possibility that he heard stories from the Indians of a great river upon the western slope of the Rocky Mountains, and invented for it the name Oregon.
In 1787 Meares, an English trader, visited the coast, and sailing southward from the Strait of Juan de Fuca, attempted to find the river San Roque as it was laid down upon the Spanish charts. Reaching the proper latitude, Meares rounded a promontory and found behind it a bay which he was unable to enter because of a continuous line of breakers extending across it. He became satisfied that there was no such river as the San Roque, and named the promontory Cape Disappointment and the bay Deception Bay. If Meares had entered the bay through the breakers, the English would undoubtedly have made good their claim to the discovery of the Columbia River.
After the Revolution, American trading ships began to extend their operations into the North Pacific. In 1787 two such vessels left Boston, one of them under command of a Captain Gray. After reaching the Pacific, the ships were parted during a storm, and Captain Gray finally touched the American coast near the forty-sixth degree of north latitude. For nine days he tried to enter an opening which was in all probability the one attempted by Meares. After nearly losing his ship and suffering an Indian attack, he sailed north to Nootka Sound.
Captain Gray returned to Boston, but in 1790 started upon another trading expedition in command of the ship Columbia. Arriving safely in the North Pacific, he spent the winter of 1791-1792 upon Vancouver Island.
Vancouver, whose name has been given to the largest island upon the western coast of North America, and who did so much to make known the intricate coast line of the Puget Sound region, arrived upon the scene in 1792. He was authorized to carry on explorations, and to treat with Spain concerning the abandonment of the Spanish claim to Nootka Sound.