228 



LOWELL — AREOGRAPHY. 



[April 4, 



a large dark area in the shape of a funnel, the Syrtis Major. Then 

 a ribbon ending in a scroll, the Sabaeus Sinus, the adopted zero 

 point of Martian longitudes. 



Map of Kaiser, 1864. 



Fig. 3. 



Map of Dawes, by Proctor, 1867. 



9. In map No. 2, Kaiser's, all these features can be followed, 

 from the eye with its eyebrow and the curve of its lower lid down 

 through the chain of seas back to the oculus again. The various 

 other dark markings on the map can be similarly identified. 



