He would next consider the effects of the abolition on those places where it was chiefly carried on. But would the committee believe, after all the noise which had been made on this subject, that the Slave-trade composed but a thirtieth part of the export trade of Liverpool, and that of the trade of Bristol it constituted a still less proportion? For the effects of the abolition on the general commerce of the kingdom, he would refer them to Mr. Irving; from whose evidence it would appear, that the medium value of the British manufactures, exported to Africa, amounted only to between four and five hundred thousand pounds annually. This was but a trifling sum. Surely the superior capital, ingenuity, application, and integrity, of the British manufacturer would command new markets for the produce of his industry, to an equal amount, when this should be no more. One branch, however, of our manufactures, he confessed, would suffer from the abolition; and that was the manufacture of gunpowder; of which the nature of our connection with Africa drew from us as much as we exported to all the rest of the world besides.
He hastened, however, to another part of the argument. Some had said, “We wish to put an end to the Slave-trade, but we do not approve of your mode. Allow more time. Do not displease the legislatures of the West India islands. It is by them that those laws must be passed, and enforced, which will secure your object.” Now he was directly at issue with these gentlemen. He could show, that the abolition was the only certain mode of amending the treatment of the slaves, so as to secure their increase; and that the mode which had been offered to him, was at once inefficacious and unsafe. In the first place, how could any laws, made by these legislatures, be effectual, whilst the evidence of Negros was in no case admitted against White men? What was the answer from Grenada? Did it not state, “that they who were capable of cruelty, would in general be artful enough to prevent any but slaves from being witnesses of the fact?” Hence it had arisen, that when positive laws had been made, in some of the islands, for the protection of the slaves, they had been found almost a dead letter. Besides, by what law would you enter into every man’s domestic concerns, and regulate the interior economy of his house and plantation? This would be something more than a general excise. Who would endure such a law? And yet on all these and innumerable other minutiae must depend the protection of the slaves, their comforts, and the probability of their increase. It was universally allowed, that the Code Noir had been utterly neglected in the French islands, though there was an officer appointed by the crown to see it enforced. The provisions of the Directorio had been but of little more avail in the Portuguese settlements, or the institution of a Protector of the Indians, in those of the Spaniards. But what degree of protection the slaves would enjoy might