EUROPE.

The main topic of interest in England is still the Great Exhibition. Even the uncertainties of the Ministerial existence, the Papal Aggression Bill, the Ceylon Question, and other measures, sink into insignificance beside the imposing display of the products of all nations, opened in Hyde Park. The continued support and encouragement given by the Queen, who has visited it almost daily since the opening, has contributed greatly to the success of the undertaking. The receipts for the first two or three weeks were from $10,000 to $15,000 per day. After the price of admission was reduced to one shilling, the receipts decreased considerably; but in the last accounts, from fifty to sixty thousand persons visited the building daily. The entire amount received from the sale is already more than £50,000; and it is expected that the proceeds will be sufficient, with the amount subscribed, to defray the whole expense of the building. The limit for the admission of articles has been extended to the 1st of September. Thirty juries have been appointed, to decide on the merits of the different classes of contributions, and adjudge the medals, which will be distributed to the value of £20,000.

The Ministry of Lord John Russell holds its position with better success than was anticipated. The Malt Tax, one of its measures, was carried by a majority of 136. The debate on the Ceylon Government question, where a defeat was again anticipated, resulted in sustaining the Ministers by a majority of 80. As this was the main question before the House, Lord John Russell's place is secure for the rest of the session. The two great parties have agreed not to make the Papal Aggression Bill a point of political difference. In consequence of this, the Government carried every question on the bill by a large majority. Mr. W. G. Fox made an unsuccessful attempt to introduce a bill for Free Schools in England and Wales. A riot occurred at Tamworth, the residence of the late Sir Robt. Peel, on account of a Protectionist banquet having been held there. A mob broke into the hall, and dispersed the company, who armed themselves and engaged in a regular fight. The quarrel was only subdued by the intervention of the military. The Collins' steamer Pacific, having made the trip from New-York to Liverpool in nine days and nineteen hours, the English papers admit the defeat of the Cunard line.

The recent political movements in France contain no salient points of interest. The subject of the revision of the Constitution is still agitated among all parties, and there seems a slow and gradual preparation for a severe struggle. The Legitimatists are strongly in favor of the measure. The debate thereupon will come on about the 1st of July, and will probably last about a month. Next to this in importance is the subject of the next general election, which will take place in May, 1852. All parties are mingling their intrigues in the general preparation. Among the different plans is that of the fusion of the two branches of the Bourbon family into a single monarchical party, to which Guizot and the Duke de Nemours are said to be favorable. The friends of Louis Napoleon are in favor of a revision of the Constitution for the purpose of prolonging his term. The Constitutionnel, the organ of the middle class in Paris, advocates the repeal of the law limiting the suffrage. Emile de Girardin, editor of the Presse, has made a violent attack upon Generals Cavaignac and Changarnier, charging the latter with having formed a design of invading England, while Ledru-Rollin was minister of the Interior. To this attack neither of the generals has responded.

In Germany, the Dresden Conferences have closed. The King of Prussia and the Emperor of Austria have visited Warsaw as the guests of the Emperor Nicholas. The meeting, however, is considered as something more than a mere visit of courtesy. At the latest dates the three potentates were still at Warsaw, but nothing had transpired indicative of the nature of their conferences. The Prussian General Assembly had adjourned. During the recent session upwards of eleven and a half millions of thalers were voted for the expenses of the late useless campaign.

Austria is making desperate efforts to relieve herself from her embarrassing financial position. Baron Rothschild, one of the principal creditors of the empire, has been summoned to assist at the consultation; the prospect is said to be better than had been anticipated. A change has taken place in the Austrian Ministry, Baumgarten having been made Minister of Commerce in place of Brück. The Countess Teleki, and her companion Madame Eardly, have been arrested in Hungary, on charge of conveying letters from the political refugees in London to their partisans in Asia Minor and Hungary. They are to be tried by a court martial.

Italy is in a most unfortunate condition. The reaction continues to increase in power, while the discontent of the Republican party still ferments in all quarters. The condition of the country is very analogous to what it was previous to the Revolution. The Government of Tuscany is entirely under the control of Austria; while that of Naples, grown bold in tyranny, is more actively oppressive than ever. The death of the King of Naples was reported; but it turns out that instead of this being the case, he is more vigorous and tyrannical than ever. In Rome, the rule of the French soldiery is almost insupportable. Persons are daily arrested for the cut of their beards, or the color of their garments. In addition to this, there is a bitter hostility between the French and Roman troops, and several sanguinary quarrels have occurred. At Nice there has been a threatening meeting, claiming the revocation of certain fiscal regulations of the Government. There has been no league of Sardinia with any other of the Italian States.

The insurrection of the Duke de Saldanha, in Portugal, was entirely successful; and the Queen has been obliged to name him President of the Council, after an attempt to appoint the Viscount de Castro and the Duke of Terecira, friends of the fallen Minister, Count de Thomar. The latter gentleman was dismissed from his situation as Minister to Madrid, and has taken up his residence in England. Saldanha remained some time in Oporto, administering the Government in the name of the Queen, but afterwards proceeded to Lisbon. He has not yet announced the course he will pursue. In the mean time, large bodies of Reformers are calling upon the Queen to abdicate.

The negotiations in relation to the release of Kossuth, Count Bathyani, and the other Hungarian leaders, have taken an unfavorable turn; and it is now almost certain that the Sublime Porte will consent to retain the unfortunate exiles as prisoners for some time to come. The Governments of Austria and Russia protest against their release, and their influence will probably prevent the acceptance of the liberal offer made by the United States in behalf of the Hungarians.