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Updated: June 20, 2025
Such are the so-called medial moraines formed by the junction of two lateral ones. Sometimes a glacier may have a great number of tributaries, and in that case we may see several such moraines running in straight lines along its surface, all of which are called medial moraines in consequence of their origin midway between two combining glaciers.
Here it lets them fall, and they are gradually piled up till they form great walls of stone, which are called moraines. Some of the moraines left by the larger glaciers of olden time, in the country near Turin, form high hills, rising up even to 1500 feet. Therefore, if ice did no more than carry these stone blocks, it would alter the face of the country; but it does much more than this.
During my last visit to Switzerland in 1857, I made excursions, in company with several distinguished geologists, for the sake of testing the relative merits of the two rival theories above referred to, and I examined parts of the Jura above Neufchatel in company with M. Desor, the country round Soleure with M. Langen, the southern side of the great strath near Lausanne with M. Morlot, the basin of the Aar around Berne with M. Escher von der Linth; and having satisfied myself that all the facts which I saw north of the Alps were in accordance with M. Guyot's views, I crossed to the Italian side of the great chain and became convinced that the same theory was equally applicable to the ancient moraines of the plains of the Po.
In order, therefore, to the establishment of peace, Mrs Stoutley agreed to live one-half of the year with Lewis, and the other half with Lawrence Lewis to have the larger half as a matter of course; but she retained her cottage in Notting Hill and her maid Netta White, with the right to retire at any moment, when the exigencies of the gold-fields or the moraines demanded special attention; or when the excess of juvenile life in the mansions before mentioned became too much for her.
These walls still remain, and serve as dams to prevent the escape of the waters. But for their moraines, all these lakes would be open valleys.
The latter was grassy and pebbly, perfectly level, and quite barren, except a very few pines at the bases of the encircling mountains, and abundance of rhododendrons, Andromeda and juniper on the moraines.
Something like a half-mile farther eastward again you will find another, both probably moraines of sand and gravel on the sea bottom like those one finds ashore.
In the Roads of Glen Roy, in Scotland, we have an instance of a fresh-water lake, which has now wholly disappeared, formed in the same manner, and reduced successively to lower and lower levels by the breaking down or wearing away of the moraines which originally prevented its waters from flowing out.
From its upper end runs a canyon bordered on either side by the highest peaks in this region. The rocky walls of this canyon terminate on the east side at the head of the lake, but on the west side, a little farther down. These moraines may be traced back to the termination of the rocky ridges which bound the canyon.
It was a long reach, but we chose the rocky ridges and moraines, trying to avoid the crevassed glaciers, and all went well until the twentieth, when just as we were reaching the steeper gradients a strong wind sprang up, blowing straight down the course before us.
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