BLACK SLAVERY REMAINS. The story of slavery in the Barbary States is not yet all told. While they received white slaves from sea, captured by corsairs, they also, time immemorial, imported black slaves out of the South. Over the vast, illimitable sea of sand, absorbing their southern border, traversed by camels, those "ships of the desert," were brought these unfortunate beings, as merchandise, with gold-dust and ivory, doomed often to insufferable torment, while cruel thirst parched the lips, and tears vainly moistened the eyes. They also were ravished from home, and, like their white brethren from the North, compelled to taste of slavery. In numbers they far exceeded their white peers. But for long years no pen or voice pleaded their cause; nor did the Christian nations, professing a religion which teaches universal humanity without respect of persons, and sends the precious sympathies of neighborhood to all who suffer, even at the farthest pole, ever interfere in their behalf. The navy of Great Britain, by the throat of its artillery, argued the freedom of all _fellow-Christians_, without distinction of _nation_, but heeded not the slavery of others, brethren in bonds, Mahometans or idolaters, children of the same Father in heaven. Lord Exmouth did but half his work. Confining the stipulation to the abolition of Christian slavery, this Abolitionist made a discrimination, which, whether founded on religion or color, was selfish and unchristian. Here, again, we notice the same inconsistency which appeared in Charles the Fifth, and has constantly recurred throughout the history of this outrage. Forgetful of the Brotherhood of Man, Christian powers deem the slavery of blacks just and proper, while the slavery of whites is branded unjust and sinful.