In the Argentine Republic, and the small States in its neighborhood, the same singular state of affairs prevails that has existed for some years. Rosas, though nominally only Governor of Buenos Ayres, is in reality supreme dictator of the whole Argentine Republic. The elements of discontent against his administration have, however, so far increased that there is a probability that his overthrow may be effected. General Urquiza, Governor of the province of Entrerios, has taken up arms against Rosas, and calls upon the other provinces for aid. He, however, does not ask for military assistance, affirming that his own troops are amply sufficient to overthrow the "fictitious power" of Rosas, which he affirms to be based solely upon "terror," although he acknowledges that it has been maintained with "execrable ability." It is quite probable that Lopez, the successor of Francia, in Paraguay, may be induced to join Urquiza; for Rosas has always avowed that Paraguay was an integral portion of the Argentine Republic, and has ever cherished the design of its invasion, although more urgent occupations have never allowed him the opportunity to catty the purpose into execution. It has long been the wish of Lopez to secure the recognition by other nations of the independence of Paraguay, and it is said that he has lately addressed a communication to the President of France, designed to effect this object. Brazil has also a pretext for engaging against Rosas, owing to his having assumed the responsibility of certain aggressions upon the Brazilian provinces, committed by General Oribe. If all these separate interests can be combined at the same moment against Rosas, it is difficult to see how he can maintain himself, notwithstanding his undoubted ability. _Uruguay_ still maintains its singular position. The nominal government is without power beyond the walls of Montevideo, the capital, which, as for the last dozen years, is held in a state of siege by General Oribe, supported by aid from Buenos Ayres.