From
William Wilberforce

Wilberforce's Abolition Speech - 16 Death

Death, at least, is a sure ground of evidence, and the proportion of deaths will not only confirm, but if possible will even aggravate our suspicion of their misery in the transit. It will be found, upon an
average of all the ships of which evidence has been given at the privy council, that exclusive of those who perish before they sail, not less than 12½ per cent. perish in the passage. Besides these, the
Jamaica report tells you, that not less than 4½ per cent. die on shore before the day of sale, which is only a week or two from the time of landing.

(Voice of William Wilberforce provided by Chris Cade)