The smaller German states are now completely overruled by the Austrian and Prussian troops. The Elector of Hesse Cassel has returned to his Capital, with his Prime Minister, Hassenpflug, under their protection. The Constitution is virtually abolished by their presence, and those who supported it are subjected to the most shameful persecutions. Many of the best citizens are obliged to leave the country. Schleswig Holstein has been 'pacified' in a similar manner. Through the instrumentality of the Austrian and Prussian Commissioners, backed by a military force, the army of Schleswig Holstein has been disbanded, and the country occupied by the troops of Denmark. On the sixteenth of January, the proclamation of the King of Denmark, administering the oath of fidelity to the military, was read in the marketplace of Rendsburg. Hamburgh has been occupied by 4000 Austrian troops.

A treaty of amity and commerce has been concluded with the Swiss Diet, by Mr. Dudley Mann, Diplomatic Agent of the United States. Its provisions are of the most liberal and friendly character. The entire reciprocity and equality of the citizens of both countries, is guaranteed, so far as the right of establishment is concerned; a citizen of the United States being allowed to settle in one of the Swiss Cantons upon the same conditions as a citizen born in another Canton. Entire and unconditional liberty in disposing of property is mutually stipulated, as well as equal taxation of the individuals established, their exemption from military duties, and the grant of indemnity for damages in case of war. The commercial intercourse of the two countries is also arranged upon the most liberal and advantageous basis. Switzerland has remained tranquil, with the exception of a riot in the Canton of Berne, occasioned by the attempted extradition, on the part of the Government, of a Prussian Jew, a noted socialist, residing at St. Imier. This person was very popular among the poor, who resisted the authorities, whereupon the troops were ordered to be in readiness to support them. The Swiss Government has determined to forward a beautiful stone from the Alps, to be placed in the National Monument to Washington.

Italy is still in an unquiet state. There seems to be a growing apprehension and uneasiness among all classes in the Papal States, and it is rumored that Pope Pius, wearied with the anxieties of his situation, wishes to resign the Pontificate, and retire to a Convent.

In Naples, the Government, alarmed by rumors of Mazzini's revolutionary designs, has made many arrests, and instituted a more vigorous police system. All cafes and places of public amusement are strictly watched. The army is to be increased by 18,000 men, and as English opinions are assigned to be dangerous, those Neapolitans who intended to visit the Great Exhibition in London, have been refused their passports.

Austrian Italy is even in a worse condition. Several conspiracies have been discovered, and a large number of arrests made in consequence. A large number of persons have been executed, in the Lombardo-Venetian provinces.

The most interesting news from Spain is that of another resignation of the Ministry. The resignation of General Narvaez was not accepted by the Queen, whereupon that gentleman assembled his colleagues, and commissioned them to inform the Queen that unless she released him at once from his office, he should blow his brains out! This threat had the desired effect, and the following Cabinet was then appointed:

President of the Council and Minister of FinanceBravo Murillo.
Foreign OfficeBertran de Lys.
Grace and JusticeGonzales Romero.
Home DepartmentArteta.
WarCount Mirasol.
MarineBustillos.
Commerce, &c.Fernandez Negrete.

The project of a revision of the Constitution, which has been so warmly agitated in Sweden, has entirely failed. The proposition of the King has been rejected by two of the four chambers constituting the Legislative Assembly, three being required in its favor, to form a constitutional majority. Sweden will therefore preserve her present system of a separate representation of the nobility, clergy, citizens, and peasants.

In Turkey, the subjection of the rebellious Bosnians was consummated on the seventeenth of December, when Omar Pasha made his triumphal entry into Bosna Serai. The captive Pashas and Cadis marched on foot in the procession. It is rumored that the Porte has at length agreed to accept the offer of the British and American Governments to transport the Hungarian refugees to America, and will order their immediate release. Three hundred Polish refugees, who arrived at Constantinople from Varna, on the thirty-first of December, were to be sent to Liverpool at the expense of the Turkish Government. Two Commissioners, Ismet Pasha and Sami Pasha, have been appointed to travel through Asiatic and European Turkey, for the purpose of noting whether the new reforms in favor of the Christians have been carried out.

There is nothing from Greece, but accounts of the depredations of the robbers which now infest all parts of the country. In the provinces of Acarnania, Levadia and Attica, several villages have been sacked, and the inhabitants put to the torture.