Leopold de Buch, the celebrated Prussian geologist, died at Berlin on the 4th inst., in the seventy-ninth year of his age.

Baron Alexander Von Humboldt, in communicating the intelligence of his death, in a very affecting letter to Sir R. Murchison, thus speaks of him: “He and I were united by a friendship of sixty-three years—a friendship which never knew interruption.

I found him, in 1791, in Werner’s house in Freiburg, when I entered the School of Mines.

We were together in Italy, in Switzerland, in France—four months in Saltzburg. M. De Buch was not only one of the great illustrations of his age—he was a man of noble soul.

His mind left a track of light wherever it passed.

Always in contact with nature herself—he could boast of having extended the limits of geological science.

I grieve for him profoundly—without him I feel desolate.

I consulted him as a master: and his affection (like that of Gay Lussac and that of Arago, who were also his friends) sustained me in my labours.

He was four years my junior—and nothing forewarned me of this misfortune.

It is not at the distance of a few hours only from such a loss that I can say more respecting it.”