GENERAL CAZNEAU'S LETTER ON THE DOMINICAN REPUBLIC.

It would hardly seem possible to deny, in a formal manner, the ridiculous stories put in circulation by the New York Evening Post respecting Gen. Cazneau's mission last winter to St. Domingo. His honorable career as a public officer, his high standing in Texas as head of the State Department, attest his character and capacity in a sufficient manner; but the letter we give below is the most complete refutation that could be given to the unmerited attacks of the Evening Post. It tells its own story, and we think our New York contemporary will find it no easy matter to extricate itself from its false position—never so satisfactorily as Gen. Cazneau does his with the Dominican and the Dominican republic.

To the Editor of the Union:

The Evening Post persists in grossly misrepresenting the Dominican people, and even goes so far in its spirit of Haytien partisanship as to deny that I desire the white or mixed race to be dominant. It branded that article as "so malicious and false that it could not possibly be written by a gentleman;" and if that is what the editor of the Post calls an admission of the truth, he is welcome to all the benefit of it. I ask no authority for its assertions, and I most emphatically deny, so far as I am concerned, all knowledge, past or present, of any "conspiracy" or "design," on my part for the acquisition of Domingo.

I do know, however, that the people of the Dominican republic, are anxious for the recognition of their independence, and of public justice. It has a right to expect this from our government; and its recognition as an act of justice and public faith. It has a right to expect this from our government; and its recognition and application as will secure that promising young State from the aggressions of Hayti.

It is the duty of the United States government to carefully promote our commerce with all the Republics on this continent.

Our ships are in a position to do their carrying-trade, and we should encourage and facilitate them in every way for the requirements of their people. It is our interest to cherish the peace of the world, and expand our commerce with all the American States, for their wealth and strength contribute to our own. It is our duty to maintain our peace with all European powers, in opposition to the present and future pretensions of European discussion. This is the principle of the American Monroe doctrine. The recognition of Dominica has long been urged upon my friends the propriety of giving it our warmest support. Generals Cass, Douglas, Houston, Rusk, and many other distinguished members of both houses of Congress, have advocated it with success, and their authority should be as good authority with an enlightened people as that of the Evening Post.

"We infer," says the Post, coming at last to the real question, "that it is the intention of the Dominican party to claim that Dominicans and Hayti are two different races; and that it is the interest of the whites for which they contend."

This is precisely the issue; they are different races: Dominicans are white and mixed, the Haytiens are black; and I repeat, and, a white government. I repeat, Mr. Editor, what I said, that, "since the late peace congress, or the convention, that has just adjourned, who has no sympathy with the color of his line. Hayti is an intolerant, irresponsible, stubborn negro despotism, without a language, though their tongue assimilates to the French.

They are governed throughout by men of pure African race. In their wars, they are as merciless as savages; and it has been, on more than one occasion, their declared intention to wholly annihilate the white and mixed race on this island. The Post is extremely unfortunate in taking into its service "rights of Hayti," which the Post's editorials maintain in terms remarkably like the official bulletins of Soulouque.

The Dominican people, on the contrary, are brave, orderly, and peaceful. Their long conflict, "sustained by their own courage," is proved by the manner in which they have successfully maintained their independence since the expulsion of the Haytien government in 1844. They have been victorious in every battle with the Haytiens; and always against great odds. In the battle of Las Carreras, Faustin had five hundred men, (and three pieces of artillery,) killed; yet the Dominicans had the character and courage to cut off his retreat, taking several pieces of artillery. His retreat across the frontier was characterized by Haytien cruelties, by the sacrifice of blood and ashes, by the destruction of property and the cruel slaughter of women and children.

Haytien atrocities cause among the colored Dominicans that horror which I take to be common to their race, to torture and murder the whites in the interior districts. They were used until the Dominicans were compelled to make slaves of them—in the style of the Post planters, which they "succeeded in doing;" but the Dominican blacks were not ignorant enough to believe those white men were their enemies; and, if the Post's editorial does not cause distress, and should fail to shake them, American slavery would be more tolerable than the Haytien, which alarms and excites the blacks into insurrection, while it defends the "rights of Hayti," to make a general destruction of the white race.

The editor of the Post may keep his eyes on the white race of the world, but he cannot see that a white-black war in Dominica would not destroy the line of white people, as it does in some of our southern States—but it is surprising that he, on the contrary, insists that we are doing nothing to promote peace and harmony between the white and black populations.

I not only "pretend to believe," but positively assert, that there are African fringe in that brave soldier and patriot statesman, President Santana. Look at the president of Hayti, Faustin, and at President Santana, educated in Louisiana, and Senior Baez, a quadroon—and compare the former monster in the South upon that accomplished gentleman as a "full-blooded white man." The American consul, or commercial agent, at Santo Domingo may inform the Post whether he considers his father-in-law, the dignified Don Domingo de la Roca, a white man. He is the minister said to be now in charge of the government, while Santana heads the army. Baez was a quadroon, but he owed his short-lived elevation to European intrigues, which are always at work in the Antilles to elevate the African, and harass and subdue the white race. He attempted, with their aid, to fraternize with Hayti, and was banished from the country in consequence.

The editor of the Post probably met some of the Baez party last winter, in the select circles of the negro nobility, during his stay of about six months ago. This is very natural, considering some of his extraordinary information in regard to Santo Domingo; for example—"that there are not two hundred whites, all told, sailors and diplomats included," in the republic of Santo Domingo.

The editor of the Post informs his readers that he knew nothing about me six months ago. This is very natural, considering the difference in our tastes and associations; but there is no occasion for the rancorous violence he exhibits because I prefer the free, permanent and intelligent white society of Dominica to the attractions of his Haytien circle. He may don a coat of mail, if he choose, and present a breastwork to Hayti; but I did not thereupon write home slanderous attacks upon the character of a citizen who was doing no wrong to his family. Men do not engage in work like this. My own character is above the reach of those mischievous misrepresentations which are calculated to lead to the wholesale murder of the white race in the island of Santo Domingo.

WM. L. CAZNEAU.