Another subject of difference, and a far more serious one than these petty ranklings of offended pride and ill-borne obligation, is the slave-trade, and the right of search. Persuade Spaniards, or Frenchmen, or any nation in the world, if you can, that Great Britain added twenty millions to her debt, impoverished her own colonial proprietors, and still goes to a heavy annual expense for the suppression of the slave traffic, with any other view than a very decided one to her own benefit. To Spain, thanks to the wretched administration of her internal resources, the revenue derived from her few remaining colonies is a great object; and in our hostility to the slave-trade, she beholds a direct attack on that source of income. Again, in the present depressed state of Spanish commerce, a large portion of the commercial capital of the country is invested in the slave-trade; and a constant bitter feeling towards the English is consequently kept up amongst the class whose money is thus employed. If they bring one cargo out of three to the Havannah, they have, it is said, a profit on the transaction; but at the same time it is not likely to put the slave-dealing Dons in particularly good humour to hear of the other two having been walked off by British cruisers. On the contrary, they curse the meddling Ingleses, who having, they say, cut off their own tail by emancipating their negroes, now, like the fox in the fable, wish to persuade, or, if necessary, to compel all their neighbours to follow their example. The English resident is enthusiastic on the subject of slave emancipation, and gives us a lively account of some arguments he maintained on the subject with sundry Gaditano slave-dealers, the result of which was, of course, that each party remained precisely of the same opinion as before. The abstract philanthropy of English legislation on that question cannot be doubted; and it is to be hoped that the course adopted may eventually prove beneficial to humanity, although it seems very doubtful whether such has as yet been the case. Meanwhile, there is small credit given to us for disinterestedness by foreigners, who, in our resolute opposition to the slave-traffic, are determined to see nothing but a wish to harass their commerce, injure their colonies, and insure our dominion of the seas.