Game was now less plentiful, and as they had to save the dried meat for the crossing of the mountains, it became a problem to provide food for the party of thirty-two people, who usually consumed a daily supply equal to an elk and deer, four deer or one buffalo. The wild berries, however, were now ripe, and as there were quantities of these they helped to furnish the larder. There were red, purple, yellow, and black currants, gooseberries, and service-berries. The sunflower grew everywhere. Lewis wrote in his diary: "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 flowed to the south, and on July 18th the party reached a wide stream, which they named Dearborn River in honor of the Secretary of War. Lewis meant to send back a small party in canoes from this point, but as he had not yet met the Snake Indians, and was uncertain as to their friendliness, he decided he had better not weaken his expedition here. He, however, sent Clark with three men on a scouting trip. Clark found an old Indian road, which he followed, but the prickly pears cut the feet of his men so badly that he could not go far. Along his track he strewed signals, pieces of cloth and paper, to show the Indians, if they should cross that trail, that the party was composed of white men. Before he returned the main party had discovered a great column of smoke up the valley, and suspected that this was an Indian signal to show that their approach had been discovered. Afterward they learned that this was the fact. The Indians had heard one of Clark's men fire a gun, and, taking alarm, had fled into the mountains, giving the smoke signal to warn the rest of the tribe.