In a book, printed in Liverpool, called The Liverpool Memorandum, which contains, amongst other things, an account of the trade of that port, there is an exact list of the vessels employed in the Guinea trade, and of the number of slaves imported in each vessel; by which it appears that in the year 1753, the number imported to America by one hundred and one vessels belonging to that port, amounted to upwards of thirty thousand; and from the number of vessels employed by the African company in London and Bristol, we may, with some degree of certainty, conclude, there are one hundred thousand Negroes purchased and brought on board our ships yearly from the coast of Africa.  This is confirmed in Anderson’s history of Trade and Commerce, lately printed; where it is said,[A] “That England supplies her American colonies with Negroe slaves, amounting in number to above one hundred thousand every year.”  When the vessels are full freighted with slaves, they sail for our plantations in America, and may be two or three months in the voyage; during which time, from the filth and stench that is among them, distempers frequently break out, which carry off commonly a fifth, a fourth, yea sometimes a third or more of them:  so that taking all the slaves together, that are brought on board our ships yearly, one may reasonably suppose, that at least ten thousand of them die on the voyage.  And in a printed account of the state of the Negroes in our plantations, it is supposed that a fourth part, more or less, die at the different islands, in what is called the seasoning.  Hence it may be presumed, that at a moderate computation of the slaves who are purchased by our African merchants in a year, near thirty thousand die upon the voyage, and in the seasoning.  Add to this, the prodigious number who are killed in the incursions and intestine wars, by which the Negroes procure the number of slaves wanted to load the vessels.  How dreadful then is this slave-trade, whereby so many thousands of our fellow creatures, free by nature, endued with the same rational faculties, and called to be heirs of the same salvation with us, lose their lives, and are, truly and properly speaking, murdered every year!  For it is not necessary, in order to convict a man of murder, to make it appear that he had an intention to commit murder; whoever does, by unjust force or violence, deprive another of his liberty, and, while he hath him in his power, continues so to oppress him by cruel treatment, as eventually to occasion his death, is actually guilty of murder.  It is enough to make a thoughtful person tremble, to think what a load of guilt lies upon our nation on this account; and that the blood of thousands of poor innocent creatures, murdered every year in the prosecution of this wicked trade, cries aloud to Heaven for vengeance.  Were we to hear or read of a nation that destroyed every year, in some other way, as many human creatures as perish in this trade, we should certainly consider