Electrical conductivity and the Seebeck coefficient of Bi8Te7S5have been measured in the two main crystallographic directions of the rhombohedral lattice, parallel and perpendicular to the hexagonal (basal) plane. The ratio of the two electrical conductivities has a value of 7.56 at liquid nitrogen temperature. The Hall effect along the basal plane has been measured. The properties change with temperature in a manner that indicates a complicated degenerate conduction band.