254 



* KNOWLKDGE ♦ 



[Septembee 1, 1888. 



MAPS AND VIEWS OF MARS. 



IGIA^E this month the long-promised map of Mai-s, 

 accompanied by what may be called a picture map, 

 and by a series of projections showing Mars not as actually 

 seen on any special occasion, but as he would appear if my 

 maps are correct, the air of Mars free from clouds, and 

 observing conditions favourable ; only I have included 

 meridians and latitude-parallels which have not yet, I 



presume, been marked by Martian races on the surface of 

 theu- world, though so to mark them would be child's 

 play compared with the construction of those double canals 

 in which Signor Schiaparelli and M. Perrotin believe. 



The maps and projections require no explanation. The 

 history of the researches which have led to the determina- 

 tion of the various features of the planet will be found in 

 part viii. of my '• Old and New Astronomy," to be published 

 on November 1. 



MiDscMiiKa (Sontljern). 



Versal Eijcixox (Southern). 



Midwinter (Sonthern). 



AUTLM.NAL E(jUDio.x (Southern). 



