“Indictment on the second and third sections of the Act of 20th of April, 1818, ch. 86, against the slave trade. There were various counts in the indictment, but that which was principally relied on, was for causing a certain vessel, called the Science, to sail from the port of New York, for the purpose of procuring negroes, &c. from Africa, to be transported and held, sold and disposed of as slaves. At the trial the cause turned principally on questions of fact.”