In order to promote these four great objects, a society was formed in May 1807, called the African Institution, and although, at first, its labours were chiefly directed to the portion of the subject relating to Africa, by degrees, as the extinction of the British Slave Trade was accomplished, its care was chiefly bestowed on West India matters, which were more within the power of this country than the slave traffic, still carried on by foreign nations.  But it is necessary in the first place, to recite the measures by which our own share in that enormous crime was surrendered, and the stigma partially obliterated, which it had brought upon our national character, Thomas Clarkson bore a forward and important part in all these useful and virtuous proceedings.  His health was now, by rest among the Lakes of Westmoreland for several years, comparatively restored and his mind once more bent itself to the accomplishment of the grand object; of his life, we may he permitted reverently to suggest, the end of his existence.

Mr. Stephen and others, at first, deemed the certainty of the Act passed in March 1807, being evaded under the stimulus, and the insurance against capture afforded by the enormous profits of the traffic, so clear, that they expected the law to become, almost from the time of its being enacted, a dead letter.  There soon appeared the strongest reasons to concur in this opinion, the result of long and close observation in the Islands where Mr. Stephen had passed part of his life.  The slave-dealers knew the risk of penalty and forfeiture which they ran; but they also knew that if one voyage in three or four was successful, they were abundantly remunerated for all their losses; and, therefore, they were no more restrained by the Abolition Act, than by any moderate increase of the cost or the risk attending their wicked adventures.  This was sure, to be the case, as long as the law only treated slavetrading as a contraband commerce, subjecting those who drove it to nothing but pecuniary penalties.  But it was equally evident that the same persons who made these calculations of profit and risk, while they only could lose the ship or the money by a seizure, would hesitate before they encountered the hazard of being tried as for a crime.  And, surely, if ever these was an act which deserved to be declared felony, and dealt with as such, it was this of slave-trading.  Accordingly, in 1810, Mr. Brougham, then a member of the House of Commons, in moving an address to the crown, (which was unanimously agreed to,) for more vigorous measures against the traffic, both British and Foreign, gave notice of the Bill, which he next year carried through Parliament, and which declared the traffic to be a felony, punishable with transportation.  Some years afterwards it was by another Act made capital, under the name of Piracy, but this has since been repealed.  Several convictions have taken place under the former Act, (of 1811,) and there cannot be the least doubt that the law has proved effectual, and that the Slave Trade has long ceased to exist as far as the British dominions are concerned.