The legislatures of some states, the reports of some auxiliary colonization societies, the speeches of some distinguished senators and representatives in congress, the addresses of some colonization agents, have represented the great sacrifice of life and treasure in “unsuccessful efforts,” by the African squadron, for the extermination of the slave-trade, and proposed to withdraw it. Whereas, it has been shown that the African squadrons, instead of being useless, have rendered essential service. For much as colonization has accomplished, and effectual as Liberia is in suppressing the slave-traffic within her own jurisdiction, these means and these results have been established and secured by the presence and protection of the naval squadrons of Great Britain, France and the United States. And had no such assistance been rendered, the entire coast, where we now see legal trade and advancing civilization, would have been at this day, in spite of any efforts to colonize, or to establish legal commerce, the scene of unchecked, lawless slave-trade piracy.

Strange and frightful maladies have been engendered by the cruelties perpetrated within the hold of a slaver. If any disease affecting the human constitution were brought there, we may be sure that it would be nursed into mortal vigor in these receptacles of filth, corruption and despair. Crews have been known to die by the fruit of their own crime, and leave ships almost helpless. They have carried the scourge with them. The coast fever of Africa, bad enough where it has its birth, came in these vessels, and has assumed perhaps a permanent abode in the western regions of the world. No fairer sky or healthier climate were there on earth, than in the beautiful bay, and amid the grand and picturesque scenery of Rio de Janeiro in Brazil. But it became a haunt of slavers, and the dead of Africa floated on the glittering waters, and were tumbled upon the sands of its harbor. The shipping found, in the hot summer of 1849, that death had come with the slavers. Thirty or forty vessels were lying idly at their anchors, for their crews had mostly perished. The pestilence swept along the coast of that empire with fearful malignity.

Cuba for the same crime met the same retribution. Cargoes of slaves were landed to die, and brought the source of their mortality ashore, vigorous and deadly. The fever settled there in the beginning of 1853, and came to our country, as summer approached, in merchant vessels from the West Indies. At New Orleans, Mobile, and other places it spread desolation, over which the country mourned. Let it be remembered that it is never even safe to disregard crime.

Civilized governments are now very generally united in measures for the suppression of the slave-trade. The coast of Africa itself is rapidly closing against it. The American and English colonies secure a vast extent of sea-coast against its revival. Christian missions, at many points, are inculcating the doctrines of divine truth, which, by its power upon the hearts of men, is the antagonist to such cruel unrighteousness.

The increase of commerce, and the advance of Christian civilization, will undoubtedly, at no distant date, render a naval force for the suppression of the African slave-trade unnecessary; but no power having extensive commerce ought ever to overlook the necessity of a naval force on that coast. The Secretary of the Navy, it is to be hoped, has, in his recent report, settled the question as to the continuance of the African squadron.

The increasing influence of Liberia and Cape Palmas will prove a powerful protection to their colored brethren everywhere. “With them Sierra Leone will unite in feeling and purposes. Their policy will always be the same. It must necessarily happen that a close political relationship in interests and feelings will unite them all in one system of action. Their policy will be that of uncompromising hostility to the slave-trade.

There are two aspects of this question well worthy of consideration:

The Liberians are freemen, recognized as having their proper standing among the nations of the world. The people of Sierra Leone are Englishmen, having the legal rights of that kingdom. Therefore, seizing the citizens of either the one or the other community in time of peace, and carrying them captive to be sold, amounts to the greatest crime which can be committed on the ocean.

Now as this may be surmised in the case of all slavers on that coast, the guilt of the slaver in the eye of national law becomes greater than before; and the peril greater. It may be presumed that if a case were established against any slave cargo, that it contained one of either of the above-mentioned description of persons, the consequences to the slavers, whatever their nation might be, would be much more serious than has hitherto been the case.

But a principle of higher justice ought long ago to have been kept in view, and acted upon. Let the caitiff have his “pound of flesh,” but “not one drop of blood.” If a man throttles another, or suffocates him for want of air, or stows eight hundred people in a ship’s hold, where he knows that one or two hundred in the “middle passage” will necessarily die, every such death is a murder, and each man aboard of such vessel who has any agency in procuring or forwarding this cargo, is a murderer. It has therefore been contrary to justice, that the perpetrators of such crimes should have been dismissed with impunity when captured. Such considerations ought to weigh with men in the future.