London: Royal Astronomical Society, 1893. Quarto. Item #022068
Reprinted from the Memoirs of the Royal Astronomical Society, Vol. .LI, pages -52. 2 full page plates illustrating 12 observations of Mars. Bound in green stiff paper wraps printed in black. From the Dudley Observatory, Albany, N.Y. Scarce locating only 5 copies via OCLC, none for sale. A very nice clean copy.