Elliptical, or azimuthal horologiography. : Comprehending severall wayes of describing dials upon all kindes of superficies either plain or curved: and unto upright stiles in whatsoever position they shall be placed. Invented and demonstrated by Samuel Foster, late Professor of Astronomie in Gresham-Colledge. - Foster, Samuel (Printed by R. & W. Leybourn, for Nicholas Bourn, at the south entrance into the Royall Exchange, 1654)