Many streams that intersect the different routes across our continent are broad and shallow, and flow over beds of quicksand, which, in seasons of high water, become boggy and unstable, and are then exceedingly difficult of crossing. When these streams are on the rise, and, indeed, before any swelling is perceptible, their beds become surcharged with the sand loosened by the action of the under-current from the approaching flood, and from this time until the water subsides fording is difficult, requiring great precautions. On arriving upon the bank of a river of this character which has not recently been crossed, the condition of the quicksand may be ascertained by sending an intelligent man over the fording-place, and, should the sand not yield under his feet, it may be regarded as safe for animals or wagons. Should it, however, prove soft and yielding, it must be thoroughly examined, and the best track selected. This can be done by a man on foot, who will take a number of sharp sticks long enough, when driven into the bottom of the river, to stand above the surface of the water. He starts from the shore, and with one of the sticks and his feet tries the bottom in the direction of the opposite bank until he finds the firmest ground, where he plants one of the sticks to mark the track. A man incurs no danger in walking over quicksand provided he step rapidly, and he will soon detect the safest ground. He then proceeds, planting his sticks as often as may be necessary to mark the way, until he reaches the opposite bank. The ford is thus ascertained, and, if there are footmen in the party, they should cross before the animals and wagons, as they pack the sand, and make the track more firm and secure. If the sand is soft, horses should be led across, and not allowed to stop in the stream; and the better to insure this, they should be watered before entering upon the ford; otherwise, as soon as they stand still, their feet sink in the sand, and soon it becomes difficult to extricate them. The same rule holds in the passage of wagons: they must be driven steadily across, and the animals never allowed to stop while in the river, as the wheels sink rapidly in quicksand. Mules will often stop from fear, and, when once embarrassed in the sand, they lie down, and will not use the slightest exertion to regain their footing. The only alternative, then, is to drag them out with ropes. I have even known some mules refuse to put forth the least exertion to get up after being pulled out upon firm ground, and it was necessary to set them upon their feet before they were restored to a consciousness of their own powers.