230 



LOWELL — AREOG K APH Y , 



[April 4, 



After the opposition of 1883-84 he drew only maps with the pole 

 for^ centre, because of the tilt of the Martian axis which exposed 

 the northern regions and hid the southern ones. 



Fig. 6. 



Map of Schiaparelli, 1879. 

 Fig. 7. 



Map of Schiaparelli, 1881-1882. 

 The distinctive features of these maps are the '' canals." The 



