it rolled down with sullen plunge into the deep river, far below. We then led the horses past, one by one, with the greatest caution. The path was so narrow and dangerous, that we gave it the name of Mahomet’s Bridge. The scenery at this point was very fine; the mountains shutting in the valley very closely on either side, and the river below tearing and roaring along over its rocky bed with great velocity. The cliff just mentioned was the first slate-rock we met with, joined with the carboniferous limestone, which indicated the approach to the auriferous region. Slate is the “bed-rock” with which gold is invariably found associated in the Cariboo mines, and therefore this first appearance of it, in passing from east to west, is of considerable interest. Bearing upon this is the curious fact, that east of the Rocky Mountains gold in any quantity has only been found, we believe, in those streams which rise on the _western_ side of the main ridge, as in the Peace River, which rises far to the west, or those which come from the very heart of the range, as the North Saskatchewan. A few hours’ travelling in the morning of the 14th brought us to the Grand Fork of the Fraser, where an important branch from the north or north-east flows by five separate mouths into the main body of the Fraser, which we had been following thus far. Here we pulled up, in order to search carefully for safe fords by which to cross these numerous swollen streams. This Grand Fork of the Fraser is the original Tête Jaune Cache, so called from being the spot chosen by an Iroquois trapper, known by the _sobriquet_ of the Tête Jaune, or “Yellow Head,” to hide the furs he obtained on the western side. The situation is grand and striking beyond description. At the bottom of a narrow rocky gorge, whose sides were clothed with dark pines, or, higher still, with light green shrubs, the boiling, impetuous Fraser dashed along. On every side the snowy heads of mighty hills crowded round, whilst, immediately behind us, a giant among giants, and immeasurably supreme, rose Robson’s Peak. This magnificent mountain is of conical form, glacier-clothed, and rugged. When we first caught sight of it, a shroud of mist partially enveloped the summit, but this presently rolled away, and we saw its upper portion dimmed by a necklace of light feathery clouds, beyond which its pointed apex of ice, glittering in the morning sun, shot up far into the blue heaven above, to a height of probably 10,000 or 15,000 feet. It was a glorious sight, and one which the Shushwaps of The Cache assured us had rarely been seen by human eyes, the summit being generally hidden by clouds. After leaving the old Cache, we entered upon fresh difficulties--deep streams to cross, timber to jump every ten yards, and the whole valley flooded. The horse which carried our flour took to swimming about in deep water, and one packed with pemmican wandered into the Fraser, and was borne down the stream for some distance.