Astronomy for amateurs . ASTRONOMY FOR AMATEURS ^31 Mars; the Martian atmosphere is al-most always limpid, and one can say October 23, 1900. ^E^i^&i^ December 22, that fine weather is the chronic stateof the planet. At times, light fogs ora little vapor will appear in certainregions, but they are soon dissipated,and the sky clears up again. Since the invention of the teles-cope, a considerable number of draw-ings have been made, depicting Marsunder every aspect, and the agree-ment between these numerous obser-vations gives us a sufficient acquaint-ance with the planet to admit of ourind
Astronomy for amateurs . ASTRONOMY FOR AMATEURS ^31 Mars; the Martian atmosphere is al-most always limpid, and one can say October 23, 1900. ^E^i^&i^ December 22, that fine weather is the chronic stateof the planet. At times, light fogs ora little vapor will appear in certainregions, but they are soon dissipated,and the sky clears up again. Since the invention of the teles-cope, a considerable number of draw-ings have been made, depicting Marsunder every aspect, and the agree-ment between these numerous obser-vations gives us a sufficient acquaint-ance with the planet to admit of ourindicating the characteristic featuresof its geography, and of drawing outareographic maps (Ares, Mars). Itsappearance can be judged of fromthe two drawings here reproduced, asmade (February, 1901) at the Observ-atory of Juvisy, and from the generalchart drawn from the total sum ofobservations (Figs. 41, 42 and 43). It will be seen at the first glance snows of Mars ^^^^ ^^le geography of Mars is very during thesum-. different from that of our own globe:mer. o 136 February i T, luOl. ^?^^2^ m IMarch 22 . 1901. Bm April 21, 1901. ^^H May 19, 1901. HH June 14, 1901.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectastronomy, bookyear19
