The Universe. .29 



the edge or border of the moon appearing 

 jagged, when so viewed, especially about 

 the confines of the illuminated part when, 

 the moon is either horned or gibbous. 



M. Schroeter, of the Royal Society o 

 Gottingen, in the year 1792, seems to have 

 taken great pains to investigate the truth 

 of this matter, i According to him, the 

 surface of the moon appears to be much 

 more unequal than that of our earth ; and 

 these inequalities have great variety both 

 in form and magnitude. There are large 

 irregular plains, on which are observed 

 long and narrow strata of hiljis running in 

 a serpentine direction : some of the moun- 

 tains form extensive chains ; others, which 

 are in general the highest, stand alone, 

 and are of a conical shape : some have 

 craters ; others form a circular ring in- 

 closing a plain. The most lofty moun- 

 tain on the surface of our globe is suppo- 

 sed to be Chimboraco, which is not twen- 

 ty thousand feet in height : but there are 

 many in the moon which are much high- 

 er ; that which is distinguished by the 

 name of Leibnitz^ is not less than 25 3 OOO 

 feet. 



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