748 



THE UNIVERSE. 



loftier tlian those of the earth. The summits of Mount 

 Doerfel are 24,700 feet above the valleys which environ 

 it, whilst the crest of Mont Blanc only rises 15,632 feet 

 above the level of the sea. 



Most of the mountains of our pale companion are of 





329. Craters on the I\Ioon's Surface, at sunset.— After Julius Schmidt. 

 a Clavius, 6 Magiuus, c Tycho, d Longomontanus. 



volcanic origin, and its sux'face has been so shattered by 

 subterranean fires that in many places the craters are 

 heaped up close beside each other. Probably no star was 

 ever so horribly torn by the fury of volcanoes. These even 

 attain proportions far beyond what is seen on our globe. 

 Some of those lunar craters are four or five leagues in 



