The old pioneers were wise geographers and surveyors. There were two things necessary for life upon the plains, viz., water and grass. They studied their maps and saw the Platte, North and South Forks, reaching northward and westward. So they made their trails along the banks, cutting off bends, avoiding impossible sloughs and hills, but keeping an eye upon the river in the distance, and ever working nearer to it when a detour had been made. The two Plattes thus furnish supplies for from five to six hundred miles. Travellers struck across the divide for the Sweetwater and its tributaries, until the foot of the Rockies is reached. As the eyes of our travelers had rested for a month upon the snow-covered peaks of the great stony mountains, one can imagine it was a day of rejoicing when they began the ascent. The trail up "the South Pass" was so easy a grade that the horses and cattle scarcely felt the strain. One looking at it would surmise that this break in the great mountain was not an accident, but it was left for a great highway between the oceans, to make one family, and a United Nation. Striking mountains, after the long dreary summer upon the alkaline plains, hard as mountain-climbing is, was yet a change to be appreciated. I recollect distinctly, it turned our little company of sturdy men (a few years later) into rollicking boys who whooped and sang to get the echoes, and rolled great stones, until their arms ached, crushing down the mountain-side. [Illustration: PACIFIC SPRING--JULY 4, 1835] _A Notable Celebration_