The Effect of the News from Hayti—Movements of Calhoun and Pakenham—The Position of the Former—What will be done?

Your number of yesterday, which arrived here this morning, containing the important news from your correspondents in Hayti and St. Domingo, fell like a bomb shell among all the politicians, from the Capitol to the White House, and throughout every hotel, tavern, and oyster cellar in the city. 'Have you seen the Herald this morning?' said one. 'No; what's in it?' 'Why the news from Hayti.' 'Why the d—l,' the first would reply—'go get a copy and read for yourself.' But alas, for his comfort, there were no Heralds to be let round upon such a basis.—Every place, where one could be found, was secured in order to read the news; from St. Domingo, which filled one entire page of interesting and important matter. In both Houses of Congress might be seen groups of members talking together upon the subject, perfectly amazed, and wondering at Bennett's industry in getting such information even in advance of the government. Nothing that has occurred for the last ten years was calculated to cause more excitement throughout this country and Europe, than the information thrown before the public in those letters, respecting that island, in your columns. Oregon and Texas are completely cast in the shade by them, and it would not surprise me much, were I to see 10,000 men on their way to that island before one month. They want such a force there at this time, in order to rescue the island from negro domination, and restore it to the white race, to whom it properly belongs. I have heard a gentleman say, who has just returned from there, that five thousand able-bodied men, in addition to the Dominican forces, would conquer, in forty-eight hours, the whole island and subjugate all the blacks. There are no existing treaties between the United States and Hayti, to prevent our citizens from going there in any character they please, and I know, from what I have learned on the subject, that any force of this sort would be accepted by the Dominican government, and ample portions of land for settlement would be given to those who would emigrate there for the purpose of sustaining the white Dominicans and others against the black savages, with whom they are contending for liberty and independence.

There is something serious going on here at present between Mr. Pakenham and Mr. Calhoun, in relation to public affairs. Whether it is the Oregon question or not, I cannot say; but the fact is, that yesterday, that has started Her Majesty's representative, for he was known to be there. Since Mr. Pakenham sent Mr. Bidwell, his attaché, in hot haste after Mr. Calhoun, who was on a visit to the Hermitage, the communication between the British Minister and the late Secretary of State, is the subject of much talk. Something is forthcoming in the settlement of our difficulties with Great Britain. It is said that Mr. Calhoun, although named in my letter of yesterday, intends to take upon himself the responsibility of proposing to suspend the joint occupancy of that territory. The South, it is said, will sustain him. He will separate himself and fall on this question, will sound his death knell, and forever bury the nullification party. From henceforth, they will not discover any difference between a Calhoun Democrat and a Nullifier. The term will be synonymous.

The friends of Mr. Calhoun in the Senate, are preparing to make a move to-day in the Senate. The latter offered them in the Senate, after the speech of Mr. Hannegan, and prefaced their introduction with some remarks, in which they took occasion to let it be known how much they hate both Calhoun and the war party. They will not be taken by surprise, and a twelve months' notice—thereby bringing the whole question to a close. If they were to act otherwise than by them, it would be tantamount to any tariff they might propose. It is well known that the whole manufacturing interest of this country would receive an impetus, and the manufacturing and commercial interests of England, by excluding the whole of her manufactures from this country. Both parties are now politicians, and will do nothing, but like a pig in a poke, or a cat in the gutter. It is also said that Mr. Calhoun will go in for annexing Cuba. He says he will do it to prevent the British. Whether Mr. Levy was serious or not, in offering a resolution to annex this island, is not known; but there are those who consider the motion rather premature. It is not so much. Among them is the British Minister, who it is rumored, remarked when he heard of it, that 'Mr. Levy was a clever young man, but a very great ass.'—His name is mentioned in this connection, and his friends say with the opposition to it at the North. The southern men will say very little, by-and-by, that they will have to annex for themselves, without consulting southern politicians.