HUMBOLDT ON AMERICAN SLAVERY.

We clip the following extract from a private letter of Mr. Julius Froebel, communicated to the Tribune by the Baron’s consent.

It is a green spot indeed to see this eminent man so strong in a point where so many young and old in this country have shown themselves so weak and unsound.

‘Your next volume, on the political future of America, would I, almost the original Adam, gladly live to see.

Continue to brand the shameful devotion to slavery, the treacherous importation of negroes, under the pretence of their becoming free—a means to stimulate the hunting of negroes in the interior of Africa.

What atrocities have been witnessed by one who had the misfortune to live from 1789 to 1858!

My book against slavery (Political Essay on the Island of Cuba) is not prohibited in Madrid, but cannot be published in the United States, which you call ‘The Republic of distinguished people,’ except with the omission of everything that relates to the sufferings of our fellowmen, who, according to my political views, are entitled to the enjoyment of the same freedom as ourselves.

Add to this, the anathema on other races of men, forgetting that the most ancient cultivation of humanity, before that of the white Hellenic race in Assyria, in Babylon, in the valley of the Nile, in Iran, in China, was the work of colored men, though not wooly haired.

I still work hard, mostly in the night, because I am unmercifully tormented with a correspondence, for the most part, of not the slightest interest.

I live joyless in my 89th year, because of the much for which I have ardently striven from my early youth, so little has been accomplished.

With renewed expressions of the friendship of many years, which political events have never troubled, I am ever your illegible

Al. Humboldt.

Berlin, January 11, 1858.