Map of the south pole of Mars : Showing the polar cap and its changes in 1894. P. L. Lowell Observatory, Flagstaff, A. T. 1895.

• Main Authors: Lowell, Percival, 1855-1916, The Riverside Press, H. O. Houghton & Co.
• Format: Map
• Language: unknown
• Published: Houghton, Mifflin and Company 1894
• Subjects: Astronomy; Exploration; Flagstaff; South Pole; South pole
• Online Access: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~347776~90115137; https://media.davidrumsey.com/MediaManager/srvr?mediafile=/Size4/RUMSEY~8~1/199/14331012.jpg

Celestial map of the south pole of Mars. Shows regions of the planet with shaded areas, spots and lines, the latter representing Martian canals. Features the polar cap and its changes from June 3 to October 5, 1894. Black and white lithograph. Map is 9 x 9 cm, on sheet 22 x 15 cm. Includes plate number II, title, date and place of observation, Flagstaff, Arizona. Appears interleaved within text of third chapter, Water, first section, The polar cap. Mars, by Percival Lowell, published in Boston by Houghton, Mifflin and Company; printed by The Riverside Press, Cambridge in 1895. Study of Mars, including illustration, diagrams and maps, created from observations collected at the Lowell Observatory in Flagstaff, Arizona in 1894 and 1895. Bound in board with original red cloth. Debossed, gilded title, authorship and illustration of Mars on front board, as well as title, authorship and publisher on spine. Gilded top edge. Octavo. Collation: 8° : [6], [i-v], vi, [vii-xi], viii [i.e., x], [1], 2-228, [6] pages (first 5 and last 6 pages blank), with 24 leaves of plates throughout. Plates comprised of 38 celestial maps, including one in color as the frontispiece. In addition, two diagrams and one illustration appear within the text. Maps show regions of the planet with shaded areas, spots and lines, the latter representing canals. Furthermore, maps feature seasonal changes in the presentation of certain locations. Volume includes preface, table of contents, list of illustrations, six chapters, appendix, index of place names indicated on the final map, Map of Mars on Mercator's projection, arranged alphabetically, as well as another, arranged numerically, and, lastly, an index of topics. Lowell’s family built the private Lowell Observatory in Flagstaff, where Lowell, a mathematician and astronomer, studied Martian canals and oases and produced much of the pioneering research on the planet. In the early 20th century, Pluto was discovered by subsequent astronomers at the Lowell Observatory, where research continues today. ...