This terrible danger escaped, Lewis resumed his examination of the surrounding scenery, and when, a couple of days later, he was joined by Clarke and his men, it was resolved that no time should be lost in continuing the ascent of the Missouri. It being absolutely impossible, however, to take the boats over the Falls, a considerable delay occurred before any arrangement could be made for transporting the baggage. A skin-boat, the frame of which had been brought in readiness, was first put together, but it was found altogether inadequate to the purpose for which it was intended; and under the direction of Clarke, eight strong canoes were finally constructed, in which such luggage as could not be dispensed with was packed. The remainder of the luggage was then concealed in a deep hole called a _cache_, or deposit, which was carefully closed to protect it from the Indians and white bears which haunted the neighborhood of the Falls, and which would certainly have made strange havoc among the valuable books, specimens of plants, drawings, etc., had they come upon them unexpectedly. Before the end of June, all was ready. The canoes admirably answered the purpose for which they were intended, and the voyage was resumed in the highest spirits. Little progress had been made, however, when Captain Clarke missed some geographical notes he had taken, and turned back, accompanied by his servant York, the interpreter Chabornæan, and the latter’s wife and child. To retrace his steps for the sake of making sure of a few facts seemed a simple enough proceeding, yet in so doing Clarke ran a risk of never completing his journey. On his arrival at the Falls, a terrible storm came on, and he took refuge with his party beneath some shelving rocks in a ravine hard by, thinking to resume his walk in an hour or so. As he waited, however, a torrent of rain and hail suddenly seemed to collect in a solid mass, and poured into the ravine in a strong current, bringing with it huge fragments of rocks, uprooted trees, and all manner of _debris_. There was not a moment to lose; the Captain seized his gun, and, pushing before him the Indian woman, who had caught her child up from the net in which it lay at her feet, he sprang up the ravine, closely followed by Chabornæan. So sudden was the rise of the water, that it was up to Clarke’s waist before he gained the bank; and as he turned to look back on reaching that refuge, he saw the whole ravine filled, and the net from which the child had been rescued whirled rapidly out of sight. An instant’s hesitation, and the whole party would have been swept down the Great Falls.