Lord Grenville opened the debate by a very luminous speech. He was supported by the Duke of Glocester, the Bishop of Durham (Dr. Barrington), the Earls Moira, Selkirk, and Roslyn, and the Lords Holland, King, and Hood. The opponents of the bill were the Duke of Clarence, the Earls Westmoreland and St. Vincent, and the Lords Sidmouth, Eldon, and Hawkesbury.
The question being called for at four o'clock in the morning, it appeared that the personal votes and proxies in favour of Lord Grenville's motion amounted to one hundred, and those against it to thirty-six. Thus passed the first bill in England, which decreed, that the African Slave-trade should cease. And here I cannot omit paying to his Highness the Duke of Glocester the tribute of respect, which is due to him, for having opposed the example of his royal relations on this subject in behalf of an helpless and oppressed people. The sentiments too, which he delivered on this occasion, ought not to be forgotten. "This trade," said he, "is contrary to the principles of the British constitution. It is, besides, a cruel and criminal traffic in the blood of my fellow-creatures. It is a foul stain on the national character. It is an offence to the Almighty. On every ground therefore on which a decision can be made; on the ground of policy, of liberty, of humanity, of justice, but, above all, on the ground of religion, I shall vote for its immediate extinction."
On the tenth of February the bill was carried to the House of Commons. On the twentieth, counsel were heard against it; after which, by agreement, the second reading of it took place. On the twenty-third the question being put for the commitment of it, Lord Viscount Howick (now Earl Grey) began an eloquent speech. After he had proceeded in it some way, he begged leave to enter his protest against certain principles of relative justice, which had been laid down. "The merchants and planters," said he, "have an undoubted right, in common with other subjects of the realm, to demand justice at our hands. But that, which they denominate justice, does not correspond with the legitimate character of that virtue; for they call upon us to violate the rights of others, and to transgress our own moral duties. That, which they distinguish as justice, involves in itself the greatest injury to others. It is not in fact justice, which they demand, but—favour—and favour to themselves at the expense of the most grievous oppression of their fellow-creatures."
He then argued the question upon the ground of policy. He showed by a number of official documents, how little this trade had contributed to the wealth of the nation, being but a fifty-fourth part of its export trade; and he contended that as four-sevenths of it had been cut off by His Majesty's proclamation, and the passing of the foreign Slave-bill in a former year, no detriment of any consequence would arise from the present measure.
He entered into an account of the loss of seamen, and of the causes of the mortality, in this trade.
He went largely into the subject of the Negro-population in the islands from official documents, giving an account of it up to the latest date. He pointed out the former causes of its diminution, and stated how the remedies for these would follow.
He showed how, even if the quantity of colonial produce should be diminished for a time, this disadvantage would, in a variety of instances, be more than counterbalanced by advantages, which would not only be great in themselves, but permanent.
He then entered into a refutation of the various objections which had been made to the abolition, in an eloquent and perspicuous manner; and concluded by appealing to the great authorities of Mr. Pitt and Mr. Fox in behalf of the proposed measure. "These precious ornaments, he said, of their age and country had examined the subject with all the force of their capacious minds. On this question they had dismissed all animosity—all difference of opinion—and had proceeded in union;—and he believed, that the best tribute of respect we could show, or the most splendid monument we could raise, to their memories, Would be by the adoption of the glorious measure of the abolition of the Slave-trade."
Lord Howick was supported by Mr. Roscoe, who was then one of the members for Liverpool; by Mr. Lushington, Mr. Fawkes, Lord Mahon, Lord Milton, Sir John Doyle, Sir Samuel Romilly, Mr. Wilberforce, and Earl Percy, the latter of whom wished that a clause might be put into the bill, by which all the children of slaves, born after January 1810, should be made free. General Gascoyne and Mr. Hibbert opposed the bill. Mr. Manning hoped that compensation would be made to the planters in case of loss. Mr. Bathurst and Mr. Hiley Addington preferred a plan for gradual abolition to the present mode. These having spoken, it appeared on a division that there were for the question two hundred and eighty-three, and against it only sixteen.
Of this majority I cannot but remark, that it was probably the largest that was ever announced on any occasion, where the House was called upon to divide. I must observe also, that there was such an enthusiasm among the members at this time, that there appeared to be the same kind and degree of feeling, as manifested itself within the same walls in the year 1788, when the question was first started. This enthusiasm too, which was of a moral nature, was so powerful, that it seemed even to extend to a conversion of the heart: for several of the old opponents of this righteous cause went away, unable to vote against it; while others of them staid in their places, and voted in its favour.