hand, Captain John Newton of Liverpool, who afterwards turned preacher,
made a voyage without losing a sailor or a slave.[40] The mortality on the
average ship may be roughly conjectured from the available data at eight or
ten per cent.

[Footnote 39: E.B. O'Callaghan ed., _Voyages of the Slavers St. John and
Arms of Amsterdam_ (Albany, N.Y., 1867), pp. 1-13.]

[Footnote 40: Corner Williams, p. 515.]

Details of characteristic outfit, cargo, and expectations in the New
England branch of trade may be had from an estimate made in 1752 for a
projected voyage.[41] A sloop of sixty tons, valued at £300 sterling, was
to be overhauled and refitted, armed, furnished with handcuffs, medicines
and miscellaneous chandlery at a cost of £65, and provisioned for £50 more.
Its officers and crew, seven hands all told, were to draw aggregate wages
of £10 per month for an estimated period of one year. Laden with eight
thousand gallons of rum at 1_s. 8_d_. per gallon and with forty-five
barrels, tierces and hogsheads of bread, flour, beef, pork, tar, tobacco,
tallow and sugar--all at an estimated cost of £775--it was to sail for the
Gold Coast. There, after paying the local charges from the cargo, some
35 slave men were to be bought at 100 gallons per head, 15 women at 85
gallons, and 15 boys and girls at 65 gallons; and the residue of the rum
and miscellaneous cargo was expected to bring some seventy ounces of gold
in exchange as well as to procure food supplies for the westward voyage.
Recrossing the Atlantic, with an estimated death loss of a man, a woman and
two children, the surviving slaves were to be sold in Jamaica at about £21,
£18, and £14 for the respective classes. Of these proceeds about one-third
was to be spent for a cargo of 105 hogsheads of molasses at 8_d_. per
gallon, and the rest of the money remitted to London, whither the gold dust