We did not, as we intended, visit the _Glacier de Boisson_ to-day, although it descends within a few minutes’ walk of the road, wishing to survey it at least when unfatigued. We saw this glacier which comes close to the fertile plain, as we passed; its surface was broken into a thousand unaccountable figures: conical and pyramidical crystallizations, more than fifty feet in height, rise from its surface, and precipices of ice, of dazzling splendour, overhang the woods and meadows of the vale. This glacier winds upwards from the valley, until it joins the masses of frost from which it was produced above, winding through its own ravine like a bright belt flung over the black region of pines. There is more in all these scenes than mere magnitude of proportion: there is a majesty of outline; there is an awful grace in the very colours which invest these wonderful shapes--a charm which is peculiar to them, quite distinct even from the reality of their unutterable greatness. * * * * * July 24. Yesterday morning we went to the source of the Arveiron. It is about a league from this village; the river rolls forth impetuously from an arch of ice, and spreads itself in many streams over a vast space of the valley, ravaged and laid bare by its inundations. The glacier by which its waters are nourished, overhangs this cavern and the plain, and the forests of pine which surround it, with terrible precipices of solid ice. On the other side rises the immense glacier of Montanvert, fifty miles in extent, occupying a chasm among mountains of inconceivable height, and of forms so pointed and abrupt, that they seem to pierce the sky. From this glacier we saw, as we sat on a rock close to one of the streams of the Arveiron, masses of ice detach themselves from on high, and rush with a loud dull noise into the vale. The violence of their fall turned them into powder, which flowed over the rocks in imitation of waterfalls, whose ravines they usurped and filled.