252 



KNOWLEDGE 



[NOVEMBXB, 1902. 



CHART OF MARS. 



Bv E. M. Antoniadi, f.r.a.s. 



MeiuptEs 

 aJo 140 sSo j6o 070 a«o ago Sao 3io 'Mo 33o 340 35o 10 QO 3o 40 So 60 70 So 90 100 110 no i3o 140 li o lOo 170 li o 



180 190 200 



_, 1 1 . ^.:.i:^ ,+. 



i5o 140 i5o 160 170 180 



The kindness of Monsieur E. M. Autouiacli enables us to meet the wisbes of several of our correspondents who 

 have asked for a chart of Mars brought up to date, and embodying the most trustworthy researches. The chart is 

 based chiefly upon the works of Schiaparelli during the oppositions of from 1887 to 1890 inclusive, and upon the 

 successive Reports of the Mars Section of the British Astronomical Association, together with M. Antoniadi's own 

 long-continued observations. 



Nortli Polar Ei'i'ion of Mars. 



Soiitli Polar Eesnon of ilars. 



