In the Cordillera of South America, nearly under the equator, glaciers once extended far below their present level.

In central Chile I examined a vast mound of detritus with great boulders, crossing the Portillo valley, which, there can hardly be a doubt, once formed a huge moraine; and Mr.

D.

Forbes informs me that he found in various parts of the Cordillera, from latitude 13 to 30 degrees south, at about the height of 12,000 feet, deeply-furrowed rocks, resembling those with which he was familiar in Norway, and likewise great masses of detritus, including grooved pebbles.