Fig. 17. Map of the planet Mars in Mercator’s projection according to drawing by Schiaparelli. A comparison with the drawing by Antoniadi ([Fig. 17a]) suggests that Schiaparelli has made a somewhat diagrammatic picture, which sets forth a very great number of strictly straight “canals.”

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Fig. 17a. Map of the planet Mars in Mercator’s projection, drawn in 1909 by E. M. Antoniadi.

Explanations:Meredies = south; Oriens = east; Occidens = west;
Septentrio = north; Nix = snow.
Abbreviations:M = Mare, sea; S = Sinus, bay; Fr = Fretum, channel;
L = Lacus, lake; Fl = Flumen, river;
R = Regio, region; I = Insula, island;
Pr = Promontorium, cape.

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