Abbè Raynal, Hist. Phil. vol. 4. P. 154.
Justin, L. 2. C. 1.
Cicero de Officiis. L. 1. C. 8.
It is universally allowed, that at least one fifth of the exported negroes perish in the passage. This estimate is made from the time in which they are put on board, to the time when they are disposed of in the colonies. The French are supposed to lose the greatest number in the voyage, but particularly from this circumstance, because their slave ships are in general so very large, that many of the slaves that have been put on board sickly, die before the cargo can be completed.
This instance happened in a ship, commanded by one Collingwood. On the 29th of November, 1781, fifty-four of them were thrown into the sea alive; on the 30th forty-two more; and in about three days afterwards, twenty-six. Ten others, who were brought upon the deck for the same purpose, did not wait to be hand-cuffed, but bravely leaped into the sea, and shared the fate of their companions. It is a fact, that the people on board this ship had not been put upon short allowance. The excuse which this execrable wretch made on board for his conduct, was the following, "that if the slaves, who were then sickly, had died a natural death, the loss would have been the owners; but as they were thrown alive into the sea, it would fall upon the underwriters."
This gentleman is at present resident in England. The author of this Essay applied to him for some information on the treatment of slaves, so far as his own knowledge was concerned. He was so obliging as to furnish him with the written account alluded to, interspersed only with such instances, as he himself could undertake to answer for. The author, as he has never met with these instances before, and as they are of such high authority, intends to transcribe two or three of them, and insert them in the fourth chapter. They will be found in inverted commas.
One third of the whole number imported, is often computed to be lost in the seasoning, which, in round numbers, will be 27000. The loss in the seasoning depends, in a great measure, on two circumstances, viz. on the number of what are called refuse slaves that are imported, and on the quantity of new land in the colony. In the French windward islands of Martinico, and Guadaloupe, which are cleared and highly cultivated, and in our old small islands, one fourth, including refuse slaves, is considered as a general proportion. But in St. Domingo, where there is a great deal of new land annually taken into culture, and in other colonies in the same situation, the general proportion, including refuse slaves, is found to be one third. This therefore is a lower estimate than the former, and reduces the number to about 23000. We may observe, that this is the common estimate, but we have reduced it to 20000 to make it free from all objection.
Including the number that perish on the voyage, and in the seasoning. It is generally thought that not half the number purchased can be considered as an additional stock, and of course that 50,000 are consumed within the first two years from their embarkation.
That part of the account, that has been hitherto given, extends to all the Europeans and their colonists, who are concerned in this horrid practice. But we are sorry that we must now make a distinction, and confine the remaining part, of it to the colonists of the British West India islands, and to those of the southern provinces of North America. As the employment of slaves is different in the two parts of the world last mentioned, we shall content ourselves with describing it, as it exists in one of them, and we shall afterwards annex such treatment and such consequences as are applicable to both. We have only to add, that the reader must not consider our account as universally, but only generally, true.
This computation is made on a supposition, that the gang is divided into three bodies; we call it therefore moderate, because the gang is frequently divided into two bodies, which must therefore set up alternately every other night.