A large proportion of the free inhabitants of the United States are dependent upon their labor for subsistence. The forced, unnatural system of slavery in some of the states renders the demand for free laborers less urgent; they are not so readily and abundantly supplied with the means of subsistence as those of their own class in the free states, and as the necessaries of life diminish population also diminishes.

There is yet another cause for the decline of the white population. In the free states labor is reputable. The statesman, whose eloquence has electrified a nation, does not disdain in the intervals of the public service to handle the axe and the hoe. And the woman whose beauty, talents, and accomplishments have won the admiration of all deems it no degradation to "look well to her household."

But the slave stamps with indelible ignominy the character of occupation. It is a disgrace for a highborn Virginian or chivalrous Carolinian to labor, side by side, with the low, despised, miserable black man. Wretched must be the condition of the poorer classes of whites in a slave-holding community! Compelled to perform the despised offices of the slave, they can hardly rise above his level. They become the pariahs of society. No wonder, then, that the tide of emigration flows from the slave-cursed shores of the Atlantic to the free valleys of the West.

In New England the labor of a farmer or mechanic is worth from $150 to $200 per annum. That of a female from $50 to $100. Our entire population, with the exception of those engaged in mercantile affairs, the professional classes, and a very few moneyed idlers, are working men and women. If that of the South were equally employed (and slavery apart, there is no reason why they should not be), how large an addition would be annually made to the wealth of the country? The truth is, a very considerable portion of the national wealth produced by Northern labor is taxed to defray the expenses of twenty-five representatives of Southern property in Congress, and to maintain an army mainly for the protection of the slave-master against the dangerous tendencies of that property.

In the early and better days of the Roman Republic, the ancient warriors and statesmen cultivated their fields with their own hands; but so soon as their agriculture was left to the slaves, it visibly declined, the once fertile fields became pastures, and the inhabitants of that garden of the world were dependent upon foreign nations for the necessaries of life. The beautiful villages, once peopled by free contented laborers, became tenantless, and, over the waste of solitude, we see, here and there, at weary distances, the palaces of the master, contrasting painfully with the wretched cottages and subterranean cells of the slave. In speaking of the extraordinary fertility of the soil in the early times of the Republic, Pliny inquires, "What was the cause of these abundant harvests? It was this, that men of rank employed themselves in the culture of the fields; whereas now it is left to wretches loaded with fetters, who carry in their countenances the shameful evidence of their slavery."

And what was true in the days of the Roman is now written legibly upon the soil of your own Virginia. A traveller in your state, in contemplating the decline of its agriculture, has justly remarked that, "if the miserable condition of the negro had left his mind for reflection, he would laugh in his chains to see how slavery has stricken the land with ugliness."

Is the rapid increase of a population of slaves in itself no evil? In all the slave states the increase of the slaves is vastly more rapid than that of the whites or free blacks. When we recollect that they are under no natural or moral restraint, careless of providing food or clothing for themselves or their children; when, too, we consider that they are raised as an article of profitable traffic, like the cattle of New England and the hogs of Kentucky; that it is a matter of interest, of dollars and cents, to the master that they should multiply as fast as possible, there is surely nothing at all surprising in the increase of their numbers. Would to heaven there were also nothing alarming!

7. Because, by the terms of the national compact, the free and the slave states are alike involved in the guilt of maintaining slavery, and the citizens of the former are liable, at any moment, to be called upon to aid the latter in suppressing, at the point of the bayonet, the insurrection of the slaves.

Slavery is, at the best, an unnatural state. And Nature, when her eternal principles are violated, is perpetually struggling to restore them to their first estate.

All history, ancient and modern, is full of warning on this point. Need I refer to the many revolts of the Roman and Grecian slaves, the bloody insurrection of Etruria, the horrible servile wars of Sicily and Capua? Or, to come down to later times, to France in the fourteenth century, Germany in the sixteenth, to Malta in the last? Need I call to mind the untold horrors of St. Domingo, when that island, under the curse of its servile war, glowed redly in the view of earth and heaven,—an open hell? Have our own peculiar warnings gone by unheeded,—the frequent slave insurrections of the South? One horrible tragedy, gentlemen, must still be fresh in your recollection,—Southampton, with its fired dwellings and ghastly dead! Southampton, with its dreadful associations, of the death struggle with the insurgents, the groans of the tortured negroes, the lamentations of the surviving whites over woman in her innocence and beauty, and childhood, and hoary age!