The fate of BONPLAND, the eminent traveller and naturalist, is a topic of discussion in Germany. It seems that in a speech made in the Senate of Brazil, in August last, Count Abrantes said that Bonpland, after being released from his eighteen years' detention in Paraguay, had so far lost the habits and tastes of civilization that he had settled in a remote corner of Brazil, near Alegrete, in the province of Rio Grande du Sol, where he got his living by keeping a small shop and selling tobacco, &c., and that he avoided all mention of his former scientific labors and reputation. It seems, however, that Bonpland still maintains a correspondence on scientific subjects with his old friend Humboldt, which exhibits no falling off either in his tendencies or powers. On the other hand, some suppose that he does not return to Europe because he has taken an Indian wife, and finds himself happier in the wilderness in her company. * * * * * An _official Russian account of operations in Hungary during_ 1849 has been published at Berlin, in two volumes. It is by a colonel of the general staff, and gives a detailed narrative of the entire doings of the Russian forces in that memorable campaign. It casts a full light upon the differences between Paskiewich and Haynau, and accuses the latter, apparently not without reason, of the grossest mismanagement. Even his famous march to Szegedin, which has passed for as brilliant and well-planned as it was a successful manoeuvre, is not spared. Of course, as regards matters of detail, this writer varies largely from previous statements of the Austrians. * * * * * The second volume of Buelau's _Secret History and Mysterious Individuals_ has just been published by Brockhaus at Leipzic. The first volume was published at the beginning of last year, and has been made known to American readers by an interesting review of it in _Blackwood's Magazine_, accompanied by copious extracts. It is undeniable that Professor Buelau has had access to materials unknown to previous writers, which he has used with laudable conscientiousness, to clear up many obscure points in history, and to explain the motives of many persons whose actions have been wondered at but not understood. * * * * *