Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere
An American edition of Norman Lockyer's school astronomy textbook, issued by D. Appleton in New York in 1875 for students and general readers. The plate shown is a double-hemisphere celestial chart in stipple engraving, with constellations plotted as graded magnitude dots, the Milky Way as a mottled band, and a key of star symbols and engraved captions useful for star fields, circular map frames, and scientific lettering.
