Report of a Committee of the American Philosophical Society on Astronomical Observations : containing observations made in different parts of the United States, on the solar eclipse of February 12th, 1831 : read October 7, 1831
A report issued by a committee of the American Philosophical Society in Philadelphia, published in 1834, collecting astronomers' observations of the solar eclipse of February 12, 1831, made across the United States. The pictures are plain engraved diagrams of the sun's crescent and of an eclipse seen against a dark field, with no decorative framing. A designer could take from them a clear, schematic way of showing celestial phases as stark black-and-cream shapes.
