Game was less plentiful, and, as it was necessary to save the dried and concentrated food for the crossing of the mountains, it became somewhat of a task to provide food for a party of thirty-two which consumed a quantity of meat daily equal to an elk and deer, four deer or one buffalo. Fortunately, the berries were now ripening, and, as they grew in great quantities, proved a not inconsiderable contribution to their food-supply. Of currants there were red, purple, yellow, and black, all pleasant to the taste; the yellow being thought superior to any other known variety. The purple service-berry and pinkish gooseberry were also favorites. Besides, they made use of the very abundant and almost omnipresent sunflower. Of it Lewis says: “The Indians of the Missouri, more especially those who do not cultivate maize, make great use of the seed of this plant for bread or in thickening their soup. They first parch and then pound it between two stones until it is reduced to a fine meal. Sometimes they add a portion of water, and drink it thus diluted; at other times they add a sufficient proportion of marrow grease to reduce it to the consistency of common dough and eat it in that manner. This last composition we preferred to all the rest, and thought it at that time a very palatable dish.”
The Missouri now took in general a southerly course, and on July 18th they reached a bold clear stream, which was named Dearborn River for the then Secretary of War. They had intended to send back a small party in canoes with despatches, but as they had not met the Snake Indians, and so were uncertain as to their friendliness, it was thought best not to weaken their already small party for hostilities. Lewis decided, however, to send Clark, with three men, in advance to open up communication with these Indians and, if possible, to negotiate for horses. Clark’s journey was a failure, for the Indians, alarmed at the firing of a gun, fled into the mountains.
The mountains now closed in on the explorers and they camped one night at a place named the Gates of the Rocky Mountains. “For five and three-quarter miles these rocks rise perpendicularly from the water’s edge to the height of nearly twelve hundred feet. They are composed of black granite near the base, but ... we suppose the upper part to be flint of a yellowish brown and cream color. Nothing can be imagined more tremendous than the frowning blackness of these rocks, which project over the river and threaten us with destruction.... For the first three miles there is not a spot, except one of a few yards, in which a man could stand between the water and the towering perpendicular of the mountains.”
On July 25th Clark, who was in advance, reached the three forks of the Missouri, where he had to camp, his party worn out, their feet full of prickly pear needles and Chaboneau unable to go farther. The forks were all clear pebbly streams, discharging large amounts of water. The southeast fork was named Gallatin, the middle Madison, and the southwest Jefferson, the latter two, of equal size, being larger branches than the Gallatin.
At the three forks Sacajawea, the wife of Chaboneau, was encamped five years before, when the Minnetarees of Knife River attacked the Snakes, killed about a dozen and made prisoners of her and others of her tribe. Strangely enough Chaboneau nearly lost his life crossing the Madison, where Clark saved him from drowning. Lewis was struck with the seeming indifference of the Snake woman on her return to the spot and her own country.
The party followed Jefferson River, their journey being marked by the killing of a panther seven and a half feet long, and the overturning of a canoe, injuring one of the party, Whitehouse, losing some articles, and wetting others, but the all-important powder was so well packed that it remained dry.
“Persuaded,” says the narrative, “of the necessity of securing horses to cross the mountains, it was determined that one of us should proceed ... till he found the Shoshones, ... who could assist us in transporting our baggage.” Captain Lewis with three men preceded, and on August 11, saw “with the greatest delight a man on horseback, at the distance of two miles, coming down the plain toward them. On examining him with the glass, Captain Lewis saw that he was armed with a bow and a quiver of arrows; mounted on an elegant horse without a saddle, and a small string attached to the under jaw answered as a bridle. Convinced that he was a Shoshonee, and knowing how much of our success depended on the friendly offices of that nation, Captain Lewis was full of anxiety to approach without alarming him, and endeavor to convince him that he was a white man. He therefore proceeded on towards the Indian at his usual pace; when they were within a mile of each other the Indian suddenly stopped, Captain Lewis immediately followed his example, took his blanket from his knapsack, and holding it with both hands at the four corners, threw it above his head and unfolded it as he brought it to the ground, as if in the act of spreading it. This signal, which originates in the act of spreading a robe or skin as a seat for guests to whom they wish to show a distinguished kindness, is the universal sign of friendship among the Indians on the Missouri and Rocky Mountains.” Unfortunately, the brave took alarm at the movement of Lewis’s companions and fled. The next day brought them to the head-waters of the Jefferson. Here, “from the foot of one of the lowest of these mountains, which rises with a gentle ascent for about half a mile, issues the remotest water of the Missouri. They had now reached the hidden sources of that river, which had never yet been seen by civilized man; and as they quenched their thirst at the chaste and icy fountain—as they sat down by the brink of that little rivulet, which yielded its distant and modest tribute to the parent ocean, they felt themselves rewarded for all their labors and all their difficulties.”
Pushing on they soon saw, to the west, high, snow-topped mountains.
“The ridge on which they stood formed the dividing line between the waters of the Atlantic and Pacific Oceans. They followed a descent much steeper than that on the eastern side, and at the distance of three quarters of a mile reached a handsome, bold creek of cold, clear water running to the westward. They stopped to taste for the first time the waters of the Columbia, and, after a few minutes, followed the road across steep hills and low hollows, till they reached a spring on the side of a mountain. Here they found a sufficient quantity of dry willow brush for fuel, and therefore halted for the night, and, having killed nothing in the course of the day, supped on their last piece of pork, and trusted to fortune for some other food to mix with a little flour and parched meal, which was all that now remained of their provisions.”
In the early morn of August 13, Lewis hastened impatiently forward without food, and after a few hours of travel saw three Indians; but they fled. A little later he surprised three women, and succeeded in reaching two, who covered their heads and awaited in silence their expected death. Showing them that he was a white man, and giving them trinkets, they were reassured and recalled their comrade, when he painted their cheeks with vermilion, a Shoshone custom emblematic of peace.