A gentleman residing in Cuba writes: "No one can be here, and watch the progress of things, without being convinced that the ultimate object is the emancipation of the slaves of the island transported subsequent to the treaty of 1820, which will comprise four-fifths of the whole number; and no one who is an attentive observer, and with his ears open, but must be satisfied that there is some other powerful influence brought to bear on the subject besides Spain. Take, for instance, the late order for the registration of the slaves. The British consul openly says that the British government have been, for a long time, urging the measure. But it is not only in this, but in every other step taken, that the British finger is constantly seen. A thousand corroborative circumstances could be cited. Cuba is to-day indebted to Russia for being free from this calamity. But for the emperor's obstinacy, there would have been an English and French fleet that would have enabled them to carry out all the measures they have in contemplation." With relation to the intermarriage of blacks and whites, our informant says, "Many marriages have been performed since the date of the circular,"--that of the Bishop of Havana to the curates of the island, by the authority of the captain-general. "The captain-general," says the same authority, "is now exerting his influence for the admission of blacks into the university, to prepare them for clerical orders. Should this system be adopted, I fear it will lead to bad consequences. It will, of course, be strenuously opposed. The indignation of the Creoles has been difficult to restrain,--at which you cannot be surprised, when their daughters, wives and sisters, are daily insulted, particularly by those in uniform. I fear a collision may take place. If once commenced, it will be terrific." The decree authorizing the celebration of marriages between blacks and whites has probably produced more indignation among the Creoles than any other official acts of the captain-general. It was directed to the bishop in the form of a circular, and issued on the 22d of May. On the 29th of the same month, the bishop transmitted copies of it to all the curates within his jurisdiction; and, as we have seen, many of these incongruous marriages have been already solemnized. Notwithstanding these notorious and well-authenticated facts, the official organ of the government, the _Diario de la Marina_, had the effrontery to publish a denial of the transaction, asserting it to be mere idle gossip, without the slightest foundation, and ridiculing the idea in a tone of levity and _persiflage_.