Of the 195 negroes comprising the cargo on June 30, from one to five died nearly every day, and one leaped overboard to his death.

At the end of the record on October 29 the slave loss had reached 110, with the mortality rate nearly twice as high among the men as among the women.[39] About the same time, on the other 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 L300 sterling, was to be overhauled and refitted, armed, furnished with handcuffs, medicines and miscellaneous chandlery at a cost of L65, and provisioned for L50 more.
Its officers and crew, seven hands all told, were to draw aggregate wages of L10 per month for an estimated period of one year.