See the German Translation of this Journal; and for the other facts Mr.Brown's Appendix to Flinders's "Voyage.") As the height of the plane of perpetual snow seems chiefly to be determined by the extreme heat of the summer, rather than by the mean temperature of the year, we ought not to be surprised at its descent in the Strait of Magellan, where the summer is so cool, to only 3500 or 4000 feet above the level of the sea; although in Norway, we must travel to between latitude 67 and 70 degrees north, that is, about 14 degrees nearer the pole, to meet with perpetual snow at this low level.

The difference in height, namely, about 9000 feet, between the snow-line on the Cordillera behind Chiloe (with its highest points ranging from only 5600 to 7500 feet) and in central Chile (a distance of only 9 degrees of latitude), is truly wonderful.

(11/11.

On the Cordillera of central Chile, I believe the snow-line varies exceedingly in height in different summers.

I was assured that during one very dry and long summer, all the snow disappeared from Aconcagua, although it attains the prodigious height of 23,000 feet.